DESCRIPTION Maximum load: AC 125V/20A. DC 14V/20A; Using SMD optocoupler isolation. driving ability. stable performance; trigger current 5mA; Module voltage: 5V. The module can be set to high or low triggered by jumper; Fault-tolerant system. even if the control line is broken. the relay will not operate; Power indicator (green). relay status indicator (red) User friendly interface design. All interfaces can be connected directly via terminal wiring leads. very convenient module size: 50mm * 26mm * 18.5mm (L * W * H) has four mounting bolts holes. hole 3.1mm. 44.5mm * 20.5mm pitch Interface: DC +: positive DC power supply (voltage required by the relay.5 V) DC-: negative DC power connection VREF: Ground electricode ; Connect to cathode of the controller board supply when set it to high; Connect to anode of the controller board supply when set it to high CH1: Relay controller interface Relay outputs: NO1: normally open relay interface. the relay before the vacant after the pull shorted with COM COM1: Common Interface Relays NC1: normally closed relay interface, relay short connect with COM. after the pull-vacant High and low level trigger selection ends: When jumper short circuit with LOW is low lever trigger; When jumper short circuit with high is high lever trigger. WHAT'S IN THE PACKAGE 1 x optocoupler isolation relay module
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