DC 5V Relay Module 1 Channel Relay Board with Optocoupler Isolation Support High or Low Level Trigger 4pcs

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); 3-5V (High) Trigger Current: 5mA Max. Current: 190mA Input Connection: DC +: Positive power supply (VCC) DC-: Connect power negative ( GND) IN: Control the pick up of replay by low level or high level Output Connection: Left Connection: “NO” means “Normally Open” Middle Connection: “COM” means “Common” Right Connection: “NC” means “Normally Closed” High and Low Level Trigger Effective High level trigger when the jumper cable connecting “High” to Short Circuit; Low level trigger when the jumper cable connecting “Low” to Short Circuit; LED Indicator Light: Power Indicator: Green Indicator of Relay Status: Red Package Contents: 4 x One Channel 5V Relay Module with Optocoupler Module