5V Relay Module 4 Channel Specifications:

Normally Open Compatible Load: 10A 250VAC; 15A 125VAC; 10A 30VDC
Quiescent Current: 5mA
Maximum Current: 190mA
Trigger Current: 2 - 5mA
Trigger Voltage (LOW): 0 - 1.5V
Trigger Voltage (HIGH): 2.5 - 5V
Insulation Resistance: 100MΩ (500VDC)
Action Time (Under Rated Voltage): Less Than 10ms
Release Time (Under Rated Voltage): Less Than 5ms
Power Indicator (Green), Relay Status Indicator (Red)
Friendly Interface Design. All Interfaces Can Be Connected Directly Via Terminal Wiring Leads.

Input Interface:
DC+: Connect to Power Positive (According To the Relay Voltage Range)
DC-: Connect to Power Negative
IN: Relay Module Trigger Pin (High or Low Level Trigger Optional)

Output Interface:
Normally Opened (NO) : Normally Open Pin
Common Pin (COM) : Common Pin of Relay
Normally Closed (NC) : Normally Close Pin

High/Low Level Trigger:
1. Low Level Trigger When Jumper and L Short Circuit
2. High Level Trigger When Jumper and H Short Circuit

Package Include: 4pcs 4 Channel 5V Relay Module with Optocoupler Module