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This compact board, combined with two level sensors and a water pump (not included), automatically controls the water level in a tank, cistern, etc

Analogue sensor with a light-dependent resistor and a 3-pin output connector, 2.54 mm pitch.

This Hall effect switch, magnet included, is ideal for applications that call for accurate, dependable detection of position, movement or the presence of a magnetic field. Powered from 5 to 30VDC, it has an NPN output and a compact M12 x 30 mm body. Perfect for automation systems and industrial applications, it performs well across a wide range of operating conditions.

Three-pin output module with DHT11 sensor

Module for measuring the pH level and the temperature of a water-based solution.

Ultra-compact little module with a miniature PIR sensor, control board and an output to be interfaced to a microcontroller, Arduino and the like (high level 3 V – low 0 V)

Fitted with a microphone, an audio signal amplifier IC (LM386), a sensitivity adjustment trimmer, analogue and digital outputs and an output signal indicator LED, this small module lets you measure the sound level in the surrounding environment

This compact module uses a LASER as the transmitter and a phototransistor as the receiver. The beam emitted by the transmitter is reflected by the surface in front of it and hits the lens of the receiver (the lens focuses the reflected light onto the phototransistor), turning the phototransistor on