5V Optocoupler Isolation Relay Module, SRA-20A

• 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

• 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

• 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

• 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