80-200 - ULTRASONIC MOVEMENT DETECTOR

SAYAL Electronics Verified independent store

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The circuit uses a matched pair of 40Khz transducer elements to detect movement out to about 22 feet. You may add a relay (not included) to switch a heavy appliance etc.; the unit switches just an LED as supplied. The circuit can be switched to latch on. An ideal alarm circuit that cannot be easily fooled. Show more