Helonge Relay Module 4 Pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger

Specifications: - Relay Type: 5V 1-Channel - TTL gate circuit - Quiescent Current: 5mA - Maximum Current: 190mA - Trigger Current: 3 - 5mA - Trigger Voltage(LOW): 0 - 1.5V - Trigger Voltage(HIGH): 2.5 - 5V - NO Maximum Load: AC 250V, 10A or DC 30V, 10A - Power Indicator: Green - Relay Status Indicator: Red - Size(L x W x H): 51*26*19mm - Weight: 17g How high/low level triggers selection terminal High level trigger acts when jumper wire and high pin are short connected Low level trigger acts when jumper wire and low pin are short connected Input interface: DC+ : positive pole of power supply (VCC, voltage=5V) DC- : negative pole of power supply(GND) IN : connection to control relay pickup by high/low level trigger Output interface: NO : connection of normally open state(the relay switch is dangling before pickup, the switch will connect with "COM" after pickup) COM : common interface of relay switch NC : connection of normally closed state(the relay switch is connected with "COM" before pickup, the switch will be dangling after pickup)