1PCS 1/2/4/8 Channel 5V12V24V Relay Module Shield with Optocoupler Support High/Low Level Trigger Development Board(OneColor,2Channel Black Board)

relayProduct Description:1. The module meets international safety standards, and there is an isolation groove between the control area and the load area;2. Use genuine relay; 3. With power supply and relay action instructions, when off on, but not on continuously;4. When there is a signal on the signal input terminal, the common terminal and the normal starter are on;5. Expand the MCU development board module and expand the control of household appliances;6. Control DC or AC signal, and control 220V AC load;7. There is a regular open and a normal closed title;8. Blue KF301 terminals are easier to connect to the control line.Electrical parameters:Voltage version: 5v, 12v, 24vCurrent at rest: 5.5 milliampsWorking current: 42 mATrigger voltage: 0-4VTrigger current: 3maFor the description of high and low trigger modes, if you don't understand them, please refer to the appearance:. High-level triggering is the way voltage is triggered between the signal input and ground, which can be understood as the short-circuit triggering mode between the signal input terminal and the positive VCC&Low level trigger means that the voltage between signal input and ground is ov which can be understood as a short circuit between trigger signal input and GNDnbsp;The wiring method of the 1 relay module

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