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DIY Sub-ultrasonic Remote Control Switch Kit Electronic Switch Module Kit
Description: This circuit is powered by direct current, consisting of signal trigger circuit and bistable trigger. The transmitter transmits 18KHz ultrasonic wave with rubber ball with nozzle as instruction. When the receiver receives 18KHz instruction, it triggers bistable circuit to control the absorption of relay. This circuit is easy to make. Suitable for early and intermediate electronic fans. Appearance size: 80 x 52 x 32mm Package Included: 1 x DIY Sub-ultrasonic Remote Control Switch Kit