Electrical Supplies › Automatic › dayton 3x748 open power relay

DC 12V Adjustable Signal Trigger Timing Timer Delay Turn Off Delay Timer Switch Automatic Start Relay Module W/ Optocoupler

1) Supply power to the module (12v or 5V) and the relay will be closed immediately (at this time the status of the module output terminal is: normally open and public conduction normally closed and public disconnection) 2) The relay is disconnected... more

2 in 1 Pump Pour Water Automatic Controller DC12V Liquid Level Sensor Switch Relay Module for Motor Fish Tank Waterhouse

Interface Description: HIGH: Upper limit probe OUT: output probe LOW: Lower limit probe DC+: positive power supply DC-: Negative power supply NC: Relay normally closed contact COM: Relay common contact NO: Relay normally open contact Working principle... more

2 Channel Relay Module Optocoupler Isolation Low Level Trigger for Automatic Control Switch 12V Binzhouyucong

Features: 1. 2 channel relay modules with optocoupler protection safe to use. 2. Relay contact capacity: 250V10A relay output: normally open and normally closed. 3. Low level trigger. 5V relay signal input voltage range: 0-5v. 4. VCC system power... more