A pair of PCB, one a transmitter and receiver, transmits an infra-red beam about 5 metres. And if the beam is broken by anything or anybody, the receiver-board switches a relay. (5Amps, 220Vac). Operating voltage: 9V to 12Vdc.
12VDC TEMPERATURE CONTROLLER BOARD | XH-W1209
DC-DC BUCK CONVERTER LM2596S STEP-DOWN MODULE
DC-DC BUCK CONVERTER XL4015 STEP-DOWN MODULE
EFK 12000 Just Whistle
EFK 12002 Infra -Red Remote Control
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