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1 2 4 8 Channel 5V 12V 24V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino 1 2 4 8 Way

Product Features

1. The use of genuine high-quality relay

2. Optocoupler isolation, drive ability, stable performance

3. Multi-operating voltage optional, multi-output optional

4. High and low starting mode can be set

5. Power supply, work dual indicator light

6. Input and output terminals for easy wiring

Product pin definition and function

1. DC +: positive power supply (according to the relay operating voltage selection)

2. DC-: power supply ground

3. IN or INX: control signal input

4. NO or NOX: load access, normally open

5. COM or COMX: load access, common

6. NC or NCX: Load access, normally closed

Description

1Way

2Way

4Way

8Way

Trigger Mode Configuration Description

The module has a trigger level selection terminal, each relay trigger level can be individually controlled, through the short-circuit cap to control. COM side is common, in the middle;
When the LOW (L) terminal is connected to the common terminal, it is a low level trigger; when the HIGH (H) terminal is connected to the common terminal, it is a high level trigger.