A small Methane, Butane and LPG sensor that offers digital and analog output for Microcontrollers. An excellent soldering kit for those who want something to solder that has a useful function upon completion.Â
A small alcohol vapor and ethanol detector sensor that offers digital and analog output for Microcontrollers. An excellent soldering kit for those who want something to solder that has a useful function upon completion.Â
A small Liquid Petroleum and Natural Gas Sensor that offers digital and analog output for Microcontrollers. An excellent soldering kit for those who want something to solder that has a useful function upon completion.Â
Sounds change depending on the closeness of hands or fingers to the photocell sensor. The kit is suitable for beginners, even if you have never soldered before.
With ABRA's best selling Alarm Kit you learn basic electronic principles while building a simple burglar alarm to protect your house, room, close or windows.
This has a highly sensitive built-in microphone which picks up noises and makes the ghost dance with its built-in motor, make eerie sounds with the built-in speaker, and randomly blink. The unique circuit board design includes two ominous blinking eyes that change with various conditions, including sudden changes in ambient noise.
This multifunctional device is easy to use in a variety of applications : 1) LED control of set fluid level : LOW, MIDDLE, HIGH ; 2) Controller : the relay automatically switches a pump and/or valve to keep the fluid level between the LOW and HIGH marks ; 3) Alarm : if the sensor detects a level which is too high or too low (selectable), the relay will operate a bell or other alarm device.
This 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.
This kit gives an 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.
This Car Alarm Simulator Kit gives you a realistic looking flashing LED sequence that simulates the appearance of an active car alarm system.
The Metal Detector is basically an oscillator that transmits in the AM radio band. When a radio is placed near the oscillator; it will emit an audible tone when metal is present.
