This 4 Channel Relay Module 12V High and Low Level Trigger Relay Module comes with a max load for output: AC 250V/10A, DC 30V/10A. A trigger current of 20 mA can be used to all kinds of single-chip microcomputer IO control triggering, normally opening and closing two work modes. By switching the trigger level selection terminal to set 3-5V high level or 0-1.5V low level trigger controlled,

Adopting patch piece opto-isolator, green power light, red relay status light, strong drive capability, stable performance, and clear work conditions This product is known as the 4 Channel 12V Relay Module, the 12V 4-Channel Relay Module, and the 12V 4 Channel Relay Optocoupler Isolation Module.

Trigger Mode Configuration:

The module has a trigger level selection terminal; for each relay, the trigger level can be individually controlled through the short-circuit cap. The 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.

Input Interface:

1. DC+: 12V positive power supply
2. DC- 12V negative power supply
3. IN: corresponding with trigger signal level of relay

Output Interface:

1. NO: normally open interface
2. COM: common interface
3. NC: normally close interface

Note: The actual product may vary slightly in color and components from the image shown, depending on quantity availability.

Package Includes:

1 x 4 Channel Relay Module 12V High and Low-Level Trigger Relay Module