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.

Applications include, announce visitors, warn against burglars, set boundaries, science projects etc.

Automatically switches on at dusk and turns off at dawn.

General purpose low-cost electronic thermostat with NTC temperature sensor from the Velleman Mini Kit range. Output relay with LED indicator. Suitable for a wide range of applications: Greenhouses, egg incubation, heating & cooling projects.

Operate your lighting simply by clapping your hands, ideal for disabled or elderly people, good immunity against surrounding noises.

A simple kit which has many applications, security systems in homes and offices or entry and exit door control. Using RFID technology a relay can be activated when card or fob is in close proximity to the detection coil. The coil can be mounted up to 5m away from main PCB. Supplied with two cards, other cards and key fob style actuator is also available.

Take your party scene to the next level thanks to this 3 channel RGB LED light organ solder kit!

Once soldered and assembled, this kit will enable you to let the LEDs of a 12V or 24V RGB LED strip 'dance' to music or to any other sound! You can also use it with separate coloured LED strips or even separate LEDs.

The internal microphone filters the music into low, mid and high frequencies and depending on those values, it will control the red, green and blue luminosity of the LED strip. By using the sensitivity adjustment per channel, you can easily modify the result of the effects to light up your room or party.

As for mounting the kit, it comes with a modular front panel concept for easy cabinet or panel mount. And to make it look professional, we added 4 smooth turning knobs to control it.