Youngneer 5v Relay Module 2 Channel for ARM-PIC-AVR-MCU Opto-Isolated Relay Board High or Low Level Trigger

Specification: Material: Circuit board  Control signal: TTL  Rated load: AC125~250V/10A, DC28~30V/10A  Max. switch voltage: 250VAC, 30V  Trigger Voltage: 0-1.5V (LOW); 2.5-5V (High) Trigger Current: 5mA Max. Current: 190mA Size: 50mm * 46mm * 18.5mm (1.9 inch *1.81 inch * 0.72 inch ) Four Fixed Bolt Holes: Diameter: 3.1mm Separation Distance: 44.5mm*35.5mm Input Connection: DC +: Positive power supply (VCC) DC-: Connect power negative ( GND) IN1: 1-Channel Signal Trigger Terminal - Control the pick-up of relay by low level or high level IN2: 2-Channel Signal Trigger Terminal - Control the pick-up of relay by low level or high level Output Connection: NO1: “Normally Open” Port for 1-Channel relay;The relay is suspended before absorption, connecting “COM1” to Short Circuit after absorption COM1: “Common” Port for 1-Channel relay NC1: “Normally Closed” Port for 1-Channel relay; Connecting to “COM1” to Short Circuit before absorption, the relay is suspended after absorption NO2: “Normally Open” Port for 2-Channel relay; The relay is suspended before absorption, connecting “COM1” to Short Circuit after absorption COM2: “Common” Port for 2-Channel relay NC2: “Normally Closed” Port for 2-Channel relay; Connecting to “COM2” to Short Circuit before absorption, the relay is suspended after absorption High and Low Level Trigger Effective Mode S1: High and low level trigger for 1-channel relay S2: High and low level trigger for 2-channel relay Low level trigger when “COM” connecting “Low” to Short Circuit; High level trigger when “COM” connecting “High” to Short Circuit. LED Indicator Light: Power Indicator: Green Indicator of Relay Status: Red