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click to view full size image K1803   -   UNIVERSAL MONO PRE-AMPLIFIER . This kit has been developed as pre-amp for a number of audio applications where there is insufficient input signal. Applications as a microphone pre-amplifier or for level correction. Power supply: 10-30VDC / 10mA. Output impedance: 1Kohm. Adjustable output level: max. 40dB. Frequency range : 20Hz to 20KHz ñ 3dB. Max. input signal : 40mV. PCB dimensions: 1.2" x 1.7".
$9.90 each
   
 
click to view full size image K1823   -   1A POWER SUPPLY KIT ADJUSTABLE 1.5 TO 35 VOLTS. This small power supply provides a regulated voltage, adjustable between 1.5 and 35 volts at 1 Amp. With the LM317 regulator remarkably better ripple and regulation characteristics are given than with conventional regulators. Current limiter and thermal overload protection are included in the IC. Supplied without heatsink. Output current: 1.5A max. Max. dissipation: 15W (cooled). Max. input voltage: 40V DC. PCB dimensions : 2.1" x 2.1". New,
$13.90 each
   
 
click to view full size image K2572   -   UNIVERSAL STEREO PRE-AMPLIFIER KIT. Frequency range 40Hz - 30kHz (-3dB). Maximum input voltage 50mVrms. Adjustable gain 40dB max. Output impedance 1Kohm. Requires 10-30V DC / 5mA. K1823 is the recommended power supply kit. PCB dimensions 1.7" x 2.6".
$19.30 each
   
 
click to view full size image K2579   -   UNIVERSAL START/STOP TIMER KIT. Miniature timer for all applications requiring a delay of up to 60 minutes. The control range may be adjusted. Requires 15V DC / 55mA. Relay 3A / 220V switchable time interval (without modifications): adjustable from 0 to 15 minutes. PCB dimensions 1.5" x 2.7".
$14.90 each
   
 
click to view full size image K2604   -   EMERGENCY SIREN KIT, Enter the world of amazing electronic sounds and noises. Create or imitate sirens of all kinds by adjusting 3 trimmers. Powerful sound with a 2W amplifier on the PCB. Requires 8 - 14V DC / 1A. 3.1" x 2.2",
$15.99 each
   
 
click to view full size image K2622   -   AM/FM ANTENNA AMPLIFIER KIT . This amplifier provides 22dB gain wherever you need it. DC power supply directly or via the coax cable. Metal housing included. Gain: 22dB. Power supply: 12V to 15V / 3mA. Input and output impedance: 50 - 75ohm. Frequency range : 10MHz to 150MHz. Works well with scanner to improve signal level. Note: It is important to put the amplifier as close as possible to the antenna. 3.4" x 1.4" x 0.9".
$24.98 each


   
 
click to view full size image K2644   -   FROST INDICATOR KIT. (Recommended housing #G404) Drive more safely in freezing weather. This kit uses a flashing LED to indicate a road temperature close to freezing point; below that point the LED is on continuously. A reliable temperature sensor with mounting stud is included. Requires 10 - 15V DC / 25mA. PCB dimensions 2.2" x 1.7".
$18.40 each
   
 
G404   -   Enclosure 3.5" x 2.0" x 1.3",
$3.40 each


   
 
click to view full size image K2645   -   GEIGER-MULLER COUNTER, This kit provides an acoustic measurement of radiation levels. The sensitivity is at its highest for gamma rays and high energy beta rays. The assembly is compact and may be mounted into a small box. Requires a 9V battery (not incl.). Recommended housing G416 enclosure. Dimensions: 3.9" x 2.1" x 1.0". New, Drop shipped from Texas.
$198.40 each
   
 
click to view full size image K4001   -   7W MONO AUDIO AMPLIFIER KIT . This small amplifier is constructed around the TDA2003 IC, capable of delivering 4Wrms at 4ohms. The IC is completely thermally and short-circuit protected. A conventional direct current can be connected as supply. Music power output : 7W / 4ohm. RMS output: 3.5W / 4ohm or 2W / 8ohm. Total harmonic distortion: 0.05% (1W / 1KHz). Frequency response: 20Hz to 20KHz (-3dB). Signal/noise ratio : 86dB (A weighted). Input sensitivity: 40mV / 150Kohm. Overload and short-circuit protected. Supply voltage: 15VDC (8 to 18VDC possible) / 0.5A. 2.2" x 1.4".
$16.90 each
   
 
click to view full size image K4003   -   2 X 30W AUDIO POWER AMPLIFIER KIT . This small amplifier is constructed with the TDA1521 IC, with a maximum supply capability of 2 x 15Wrms (4ohm) of 2 x 10Wrms (8ohm). The IC is thermally and short-circuit protected. Additional rectifier and smoothing filter are unnecessary, as alternating current can be directly connected to the unit. See http://www.vellemanusa.com for further specifications. 2.8" x 2.0".
$34.98 each
   
 
click to view full size image K4040   -   STEREO TUBE AMPLIFIER / CHROME VERSION, For most of us a high power tube amplifier is unaffordable. This kit changes that, so that everyone can enjoy that sublime "tube sound". The sound of tubes has never been surpassed. In the course of developing this amplifier, special attention was given to the housing so the tubes are on display in a way that is very pleasing to the eye. Ultra-linear and over-rated output transformers (toroidal) are used to guarantee a rich bass response. To extend the life of the tubes, the amplifier is provided with a power on delay, so that the high voltage is switched on after the tubes have warmed up. Output power: 2 x 90Wrms music power for loads of 4 or 8 ohm. Power bandwidth: 15Hz - 40kHz (-3dB ref. 50W). Frequency range: 8Hz - 80kHz (-3dB ref. 1W). Harmonic distortion: 0.08% (1kHz / 1W) / 0.7% (1kHz / 90W). Signal-to-noise ratio: > 105dB (A-weighted ref. 90W). Channel separation: >75dB , input impedance: 34Kohm. Input sensitivity: 1Vrms at 95W. Damping factor: >10 (100Hz). 37.5 lbs sh. 16.7x5.1x13.8. Drop shipped from Texas. List Price, $2428.00; Our Price,
$1,466.80 each
   
 
click to view full size image K4301   -   PINK NOISE GENERATOR KIT. A pink noise generator and a spectrum analyzer are used to analyze the acoustic properties of a room. A microphone with a linear frequency response is used to pick up the pink noise. The result will be the frequency response of the room. An equalizer will allow you to check and correct the response of the room. Easily adapted to produce "white noise". This pink noise kit produces a pseudo random digital noise with a clock frequency adjustable between 30 and 100khz. Regulator sliding length: 33 bit. Pink noise filter: 3dB/octave (20Hz to 20kHz). Output 150mVrms into 1000 ohms. Requires 9 - 12V AC or 12 - 15V DC / 5mA. Recommended enclosure for K1771 is the G410 which is listed at the very bottom of this page.
$24.95 each
   
 
click to view full size image K4304   -   MONO VU-METER 10 LEDS KIT . VU meter with a scale consisting of 10 LEDs and an adjustable input. Dot or bar indicator. Supplied with 1 front panel suitable for horizontal or vertical mounting. Range: -20dB to +3dB. Power supply: 10 - 15VDC / 250mA. Input sensitivity - low input: 150mV to 6Vrms (47K). high input: 1.5V to 60Vrms (470K). 1.5" x 2.7".
$24.90 each
   
 
click to view full size image K4305   -   STEREO VU-METER KIT 2 x 10 LEDS . Stereo VU meter with 2 x 10 LEDs (dot or bar indicator) and an adjustable input. Included in package: 1 front panel suitable for horizontal or vertical mounting. Range: -20dB to +3dB. Power supply: 10 - 15VDC / 250mA. Input sensitivity - low input: 150mV to 6Vrms (47K). high input: 1.5V to 60Vrms (470K). PCB dimensions : 1.5" x 2.7" (x2).
$37.90 each
   
 
click to view full size image K4307   -   AUDIO POWER METER KIT . 10 LED scale, up to 2000Wrms power measurements. Does not need a special power supply, because it is supplied directly from the speaker output. Ideal for car audio systems and PA systems. Also usable for bridged amplifiers. The unit can be used both horizontal and vertical. The kit comes with a front panel and four attractive front stickers, for the different scales. Four different scales - At 4 ohm load in low power mode: 0.3 to 400Wrms. At 4 ohm load in high power mode: 10 to 2000Wrms. At 8 ohm load in low power mode: 0.15 to 200Wrms. At 8 ohm load in high power mode: 5 to 1000Wrms. Minimum input sensitivity: 1.1Vrms (low power mode). Maximum input voltage: 130Vpeak (high power mode). Current consumption: 25mA at full scale. Luminous intensity: 8 to 20mcd / LED. 4.7" x 1.6" x 1.1".
$39.95 each
   
 
click to view full size image K4601   -   AUDIO/VIDEO TV MODULATOR KIT. The audio and video signal are converted into a UHF TV signal that can be received by the TV within a 96 ft range. The kit includes housing and antenna connector. UHF channel 21 (450 - 500MHz adjustable). Requires 12 to 15V DC / 100mA. 2.8" x 4.1" x 1.2".
$49.99 each


   
 
click to view full size image K4900   -   TELEPHONE AMPLIFIER KIT. (Recommended housing #G416) This telephone amplifier may be used as a free-standing amplifier with speaker, e.g. to listen to a telephone conversation, or the output may be connected to an amplifier or mixing panel (e.g. radio stations). Input - isolation transformer interface. Speaker output 0.5W / 8ohm. Line output 0dB (0.775Vrms). Requires 7 - 9V AC or 9 - 12V DC / 150mA. PCB dimensions : 2.5" x 2.1".
$17.98 each
   
 
G416   -   Enclosure 5.9" x 3.1" x 1.8",
$10.60 each


   
 
click to view full size image K7000   -   SIGNAL TRACER/INJECTOR KIT. This signal tracer /injector has been designed to inject or detect a specific signal into an audio circuit in need of repair (such as amplifiers, radios, tone controls, ...) so as to detect the fault. In this way problems can be traced more easily. The signal tracer may also be used as a simple monitor or amplifier. Independent injector/tracer. Injector - 0-2.5Vrms output (adjustable), output impedance: 1.5Kohm, frequency: ± 1KHz. Tracer - 3.5mV to 10Vrms sensitivity (adjustable), gain: 40dB, input impedance: 50Kohm. Output power: 0.5W / 8ohm. Power supply: 7-9VAC or 9-12VDC / 150mA. PCB dimensions: 2.4"x2.1".
$29.95 each


   
 
click to view full size image K7101   -   VOLTAGE DETECTOR KIT. (Recommended housing #G407) This Velleman kit locates house wiring within walls and traces wire to find a break. A flashing LED indicates when voltage is present. The flashing speed indicates how close the wire is, approx 3.9 inchs maximum. For audio indication you can add buzzer SV4/12-S. 9V battery (not included). 2.2"x2.5".
$15.50 each
   
 
G407   -   Enclosure 4.7" x 2.4" x 1.2",
$6.40 each


   
 
click to view full size image K7102   -   METAL DETECTOR KIT. (Recommended housing G407 as listed above) Can detect wiring, pipes, or metal parts within a wall to a depth of about 3.15 inches. A LED indicates detection of metal. For audio indication, buzzer type SV4/12-S may be connected. 9V battery (not included). Size 2.2" x 2.5".
$18.90 each


   
 
click to view full size image K7300   -   UNIVERSAL BATTERY CHARGER / CONDITIONER KIT. (Recommended housing #G311) NiCd and NiMH batteries or different can be charged both quickly (52 minutes) and normally (14 hours). Usable battery voltages: 1.2V, 2.8V, 3.6V, 4.6V, 6V, 7.2V, 8.4V and 9.6V. Charge current: from 15mA to 750mA. Battery is fully discharged prior to charging and thus has a longer life. 3.4" x 3.1". Kit requires insertion & soldering of components! New,
$29.99 each
   
 
G311   -   Enclosure 4.5" x 3.5" x 2.2",
$10.20 each


   
 
click to view full size image K7302   -   LOW COST UNIVERSAL BATTERY CHARGER KIT. (Recommended housing #G403) Charges NiCd or NiMH batteries. Ideal for car use. Transforms a mains adapter in to a charger (adapter socket included). Charge cellular phone, toys, portables, video batteries, ... Selectable charge current 50mA, 100mA, 200mA, 300mA, 400mA. LED charge indication. Supply voltage from 6.5V to 21V (depending on used battery). Supply current is same as charge current. Power supply polarity protected. LED function indication. 1.6" x 2.4".
$13.30 each
   
 
G403   -   Enclosure 3.5" x 2.0" x 0.9",
$4.00 each


   
 
click to view full size image K8004   -   DC TO PULSE WIDTH MODULATOR KIT for control for DC motors, lighting, small heaters. Pulse width modulation (PWM) produces a series of pulses whose duration is proportional to a DC voltage. This allows for very efficient control of DC motors and other DC operated devices. Overload and short circuit protected. Input voltage 8 - 35 VDC output current 6.5A. Dimensions: 3.4"x1.9"x1.8".
$29.99 each
   
 
click to view full size image K8010   -   Mono Pure Class A Tube Audio Power Amplifier. Output power is 65Wrms class A in 4 or 8ohm. Plenty of power, deep bass and low distortion, and very affordable. An attractive chrome plated enclosure has been designed, to match this state-of-the-art design. It comes complete with chrome plated tube base cover rings and heavy duty cabinet feet. Gold plated heavy duty speaker and RCA connectors. Easy bias adjustment with LED readout. Standby mode stretches tube life. Soft start circuit prevents line fuse tripping at power-up. No-compromise quality components. Custom made oversized toroid output and power transformers. One single PCB ensures hassle free assembly and wiring. Removable cabinet bottom for easy servicing. Has four KT88, one ECC81, one ECC82 tubes. Bandwidth: 8Hz to 80kHz (-3dB/1W). Harmonic distortion: 0,1% at 1W/1kHz. Signal/noise ratio: >110dB (A-weighted). Input sensitivity: 1V rms minimum (adjustable). Supply voltage: 100, 120, 230 or 245V AC. Max. power consumption: 300VA. 14.2x 14.2x6.3. Drop shipped from Texas. List Price, $1838.60; Our Price,
$1,113.16 each
   
 
click to view full size image K8015   -   MULTIFUNCTION RELAY SWITCH KIT. 15 functions including timers, switching, flashing, interval, random switching, ... Two pre-programmed delays. Learning mode for delays of 2s up to 12 days. Pushbutton control. EEPROM for delay time storage in case of power failure. On-board transient filter for the relay contacts. Suitable for control of incandescent lighting, halogen lighting, fluorescent lighting, fans, valves, buzzers,... Requires 9-12VAC or 12VDC. Max. load : 2.5A (275W / 110V). Size: 3.4" x 1.5" x 1.0".
$28.98 each
   
 
click to view full size image K8023   -   10-CHANNEL, 2-WIRE REMOTE CONTROL KIT. Control 10 devices using only 2 wires up to 55 yards apart. Microprocessor controlled. Inputs can be push-buttons, switches or open collector outputs. The receiver section provides 10 open collector outputs that control relays directly. Terminal block connectors for all input and output connections. All outputs are provided with LED indication. Can be used with: K6711, K8000RS, K8006, or relay cards: K6714, K6714-16. 10 open collector outputs: 50V / 100mA. Requires single 12-15V AC or DC, 300mA. Dimensions: control pcb: 2.7" x 2.0" x 0.6"; receiver pcb: 4.0" x 2.0" x 1.0".
$33.90 each
   
 
click to view full size image MK102   -   FLASHING LEDs. This kit is for different applications (such as model construction), and recreational. Adjustable flashing speed with two potentiometers. ± 8mA. Requires 9V battery (not incl.) 1.2" x 1.4" x 0.6".
$3.80 each
   
 
click to view full size image MK105   -   SIGNAL GENERATOR KIT . Signal output: sine wave, triangle, square wave and integrator (selectable through jumper). Signal frequency: about 1KHz (fixed). Output level: adjustable from 0 to 100mVrms (LEVEL potentiometer). Requires 9V battery (not incl.). 2.2"x1.6". Requires insertion and soldering of components! New,
$7.50 each
   
 
click to view full size image MK108   -   WATER ALARM KIT. Gives alarm sound when water is detected. Incorporated alarm buzzer. Water sensor can be placed at a distance by cutting the board and using wires to connect the sensor. Requires 9V battery (not incl.). 1.8"x2.8".
$5.60 each
   
 
click to view full size image MK111   -   INTERVAL TIMER KIT. For intermittent operation of circuits and equipment. Blinking light, video/photo single frame shooting, slide projector control, miniature models. 3A/24V output relay with dry switch-over contact. Pulse time adjustable: between 0.5 and 5 sec. Pause time adjustable: between 2.5 and 60 sec. Power supply: 12Vdc / 100mA. 1.6"x3.4".
$6.00 each
   
 
click to view full size image MK113   -   SIREN SOUND GENERATOR KIT. Generates 4 different sounds: police siren, fire brigade, emergency vehicle and laser gun. RV1 adjusts sound pitch. On/off switch and PCB speaker included. Requires 9V battery (not included). 2.4" x 1.6".
$14.40 each
   
 
click to view full size image MK115   -   POCKET VU METER KIT. 5 red LEDs. Incorporated microphone. Adjustable sensitivity. Requires 3V type CR2032 battery (not included).
$11.40 each
   
 
click to view full size image MK120   -   IR LIGHT BARRIER KIT. Applications: announce visitors, warn against burglars, set boundaries, for science projects,... Audible (85dB) and visible (LED) alert. Range 3.3ft to 13ft. On/off switch provided. Requires - Transmitter: 9V DC / 50mA max; Receiver: 9V DC / 20mA max. 9V battery holder and adapter jack included. Transmitter: 2.2" x 1.6". Receiver : 3.9" x 2.0". Not for outdoor use.
$11.30 each
   
 
click to view full size image MK125   -   LIGHT SENSITIVE SWITCH KIT. Switch-on at dusk, turn off at dawn, fully automatic. Wide-range adjustable sensitivity. Delay circuit avoids cycling. Relay output NO/NC 24V/5A max. Requires 12VDC. With adapter-connector. 2.6" x 2.0".
$9.80 each
   
 
click to view full size image MK127   -   RUNNING MICROBUG KIT. Attractive bright colored bug-shaped miniature robot. The microbug is always hungry for light, it drives towards it! Two open chassis sub-miniature motors. Adjustable light-sensitivity suits almost any light condition and allows to control it's 'bug-like' behavior. LED 'eyes' indicate driving direction. Stops in total darkness. Requires 2 x 1.5V AAA batteries (not incl.). 4.0" x 2.4".
$11.90 each
   
 
click to view full size image MK128   -   KITCHEN TIMER, 1 minute to 1 hour timing. Single button, straightforward operation. Clear 16-led readout. Audible and visible alarm with discrete pre-alarm. Auto power-off. Attractive designer enclosure. µcontroller technology. Settings: 1-10': one minute steps. 10-30': five minute steps. 30-60': 15 minute steps. Basic accuracy: better than 5%. Power supply: 3 AAA 1.5V batteries (not incl.). Power consumption: 10mA typ. Dimensions: 3.1" x 3.0" x 1.3", New,
$21.80 each
   
 
click to view full size image MK129   -   CRAWLING MICROBUG KIT. Attractive bright colored bug-shaped miniature robot. The microbug is always hungry for light, it drives towards it. Two open chassis sub-miniature motors. Adjustable light-sensitivity suits almost any light condition and allows to control it's 'bug-like' behavior. Adjustable speed. Choose between two different walks. LED 'eyes' indicate driving direction. Stops in total darkness. Requires 2 x 1.5V AAA battery operation (not incl.). 4.3" x 3.5".
$15.90 each
   
 
click to view full size image MK132   -   CABLE POLARITY CHECKER KIT, Check cables for continuity and identify individual wires. Ideal for speaker cable polarity checking. LED indication for open circuit, shorts and correct or wrong polarity. Pushbutton operation with auto power off. Low power consumption of 10mA max. Power supply of 9V battery operated (not incl.). Main board: 2.2" x 1.6" x 1.3". Remote board: 1.6" x 0.3".
$9.80 each
   
 
click to view full size image MK133   -   QUIZ TABLE KIT. Up to four players can compete. LED indicates first button pushed. Quizmaster 'RESET' -button with 'button pushed'-indication. Two units can be daisy-chained for eight-player-fun! With on-off switch. Requires 9V battery (not included). 4.3" x 3.1" x 1.1".
$12.20 each
   
 
click to view full size image MK136   -   SUPER STEREO EAR KIT. Stereo audio amplifier boosts sound 50 times. Great for the-hearing impaired (e.g. when watching TV), as a gadget, science project, &#8230; With volume control and on/off switch. Requires three AA batteries (not included). 2.4 x 2.1 x 1.7, New,
$13.50 each
   
 
click to view full size image MK139   -   CLAP ON/OFF SWITCH KIT, Operate your lighting with a simple handclap. Ideal for disabled or elderly people. Good immunity against surrounding noises. '1-clap' or '2-clap'-mode selection. '2-clap'-mode features built-in safety turn-off timer (5h approx.). Output relay 'pulse' or 'toggle' selection. Microprocessor controlled. Output relay with LED-indicator . Requires 12V DC / 150mA. With DC adapter socket. 3.1" x 2.9" x 0.9". New,
$17.90 each
   
 
click to view full size image MK147   -   DUAL WHITE LED STROBOSCOPE KIT. Two super bright white LEDs. Powerful flash effect great for party's, in scale models, as attention grabber, to observe moving parts, etc... Slow/fast selector and speed adjust trimmer. Speed adjustable between approx. 1 and 60 flashes/second. On/off switch. Requires 9V battery (not included). Power consumption 40mA max. 2.2"x1.3"x1.6".
$8.50 each
   
 
click to view full size image MK148   -   DUAL SUPER BRIGHT FLASHING RED LIGHTS KIT. Two super bright red LEDs. Powerful flash effect for emergencies, warning signs, as eye-catcher, 'alarm-active' - simulation, etc. 'Auto turn-on at dark' - mode with adjustable sensitivity. On/off switch. Requires 9V battery (not included) (12V possible). 2.2" x 1.3" x 1.6".
$9.20 each


Audio Specialties Kits - These kits consist of quality fiberglass circuit boards, components for circuit boards, instructions. Kits do NOT include case, meter, switches/pots, battery, misc hardware unless noted.



   
 
click to view full size image ASC-585-B   -   Audio Wattmeter Kit indicates 100/1000 Watts/8 Ohms or 200/2000 Watts/4 Ohms using simple,but accurate circuitry. With meter scale. Buyer to supply case, 1 ma meter, switch.
$6.95 each
   
 
click to view full size image ASC-586-B   -   50 OHM ATTENUATOR PAD KIT for use up to 150 Mhz provides 42 db of attenuation in 6,12,24 db steps. With slide switches, circuit board, resistors instructions.
$6.95 each
   
 
click to view full size image ASC-581-B   -   AC VOLTMETER KIT 10Hz to 350Khz -1db, 7 to 700 KHZ -3db. Input impedance 111 KOhm. Range 20, 200 mv, 2,20,200 volts AC. Builder to supply meter, case, 9v battery. Kit includes board, resistors, capacitors, range switch, diodes, IC, and instruction.
$9.95 each
   
 
click to view full size image ASC-584-B   -   PRECISION CAPACITANCE METER KIT. Crystal referenced differentiating HCMOS circuitry indicates 1 nf to 10mfd, 1% accuracy. Builder supplies 4 DPDT slide switches, case, external digital voltmeter for readout, connection for unknown capacitor and output for voltmeter, 9V battery.
$9.95 each
   
 
click to view full size image ASC-583-B   -   4 DECADE SIGNAL GENERATOR KIT 200 to 200Khz Sine 1.5Vrms/Square wave 5v p-p output, extremely flat amplitude over operating range. Output resistance 3 Kohm. Digitally generated signal frequency. Output to monitor frequency on DMM. Includes circuit board, board components. Builder to supply 4 DPDT switches, 1/SPST, 100K pot, case, terminals, 9 volt battery.
$9.95 each
   
 
click to view full size image ASC-582-B   -   PRECISION OSCILLATOR KIT 1 HZ - 1 MHZ Sine 1.5 VRms/Square wave 5 V p-p. Extremely flat amplitude over operating range. HCMOS digitally generated signal frequency, output to monitor frequency with DMM. Builder supplies 2 pole 6 position switch, 4 binding posts, 9 v battery, 100K pot, case, and DMM.
$12.95 each


   
 
PH-6x6   -   Copperclad Board for making printed circuit cards. Milacron backed; 6" x 6" x 0.07" thick.
$1.50 each
   
 
click to view full size image KNS10   -   FUEL CELL CAR SCIENCE KIT, This Fuel Cell Car Science Kit uses a reversible PEM fuel cell that combines electrolysis and power conversion into one single device. Watch as oxygen and hydrogen gases are formed in two transparent water containers. The car steers independently of the user once in operation: when the car hits a barrier, it will automatically find its way by reversing away 90 degrees. This fun science kit combines cutting-edge science, education and fun for all! Recommended age for 12 years and up. This kit contains: PEM reversible fuel cell module, car chassis & wheels, electric motor, flashing LED lights, water vessels, gas collectors, connector cables, syringe, battery pack for 2x 1.5V AA batteries (LR6C, not incl.), and user manual on CD. Drop shipped from Texas. List price, $109.90; Our price,
$73.44 each
   
 
click to view full size image KNS11   -   H-RACER 2.0 (IR) & HYDROGEN STATION KIT - THE NEXT GENERATION, This futuristic hydrogen car science kit is an amazing way to demonstrate the use of cutting-edge alternative energy and automotive technologies. Its partly transparent body displays the inner mechanics of the car. The car's assembly instructions make it easy and fun to build, and also provides interesting education on real-world challenges. Recommended age for 12 years and up. This kit contains: H-racer chassis & body, fuel cell system components, hydrogen refuelling station (2 x 1.5V AA, LR6C, not incl.), solar panel & connectors, infrared remote control (3 x LR44, not incl.), and assembly & operation manual. Drop shipped from Texas. List price, $189.90; Our Price,
$121.44 each
   
 
click to view full size image KNS13   -   BIO-ENERGY DISCOVERY KIT, This kit demonstrates the latest in fuel cell technology using ethanol as its fuel source. Current fuel cells use hydrogen or methanol as fuel. This fuel cell kit directly converts ethanol (alcohol) to electricity silently and without any combustion. The device runs non-stop for days, providing an amazing demonstration of next-generation fuel cell technology. Ethanol not included. Recommended age for 12 years and up. This kit contains: ethanol storage tank, tube, purge valve, housing, electric motor and propeller, direct ethanol PEM fuel cell module, connection cables, ethanol mixing container, pH strips, and storage tank cover. Drop shipped from Texas. List price, $169.90; Our price,
$109.44 each
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