WiFi Relaismodul ESP8266 APP Steuerung 2-Kanal 12V Intelligente Hausautomation!
12,59 €
LED D2 and D4 (red light): Relay working light, turn on when open. NC1: Often closed end, relay and COM1 short connection before suction, after suction hovering. NO1: Often start, the relay suck in front suspension, after sucking in and COM1 short connection.
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