1 Channel 3V Relay High Level Driver Module Optocoupler Relay Module for ESP8266 Based Board

Feature A diode current protection Response time is less than 20 milliseconds Relay long life can absorb 100000 times continuously External connection use spinning crimping terminal, make connection firmer With fixed installation hole, convenient installation Description Size: 70mm X17mm X20mm (LxWxH) Main chip: EL817, SRD-DC03V-SL-C Work voltage: DC 3V/3.3V Control 10A 250VAC, 10A 30VDC load Package:2 pcs Note: When the jumper cap connected, the relay working power supply will also as the signal power supply, when not connected, the relay and signal power supply is isolated.