Relay switch modules
26 March 2016 | Updated 27 January 2018
Relay switch modules are used as high voltage AC switches by connecting a signal and DC power supply to it. These modules are made up by a relay (the ‘heart’), screw terminal connectors, a resistor, diode, capacitor, transistor and LED – making it perfect for electronic hobbyists to use in projects. More…
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Electronics
The HC-SR501 Pyroelectric Infrared Motion Sensor Module
HC-SR501 Pyroelectric Infrared Motion Sensor module
10 January 2016 | Updated 16 February 2018
HC-SR501 Pyroelectric Infrared Motion Sensor modules are electronic sensors that is used to detect motion. These modules are based on passive infrared technology with a high sensitivity and reliability. More…
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Electronics