1. Newly upgraded to version 2.0, with the module functions increased from 8 to 18 to meet more application requirements 2. The anti-reverse connection function of power supply is added, so that the module not be damaged due to wrong power supply connection 3. The system is more stable and reliable by using a high withstand voltage power supply module to replace the previous discrete power supply 4. The timing function of 0.1 second is added, and the timing accuracy is upgraded from the previous 0.1 second to 0.01 second 5. Add automatic power saving function, which users can set independently. Module interface: Module control end: there are 3-wire interfaces, and all interfaces have terminals, which are convenient for users to use. 1. DCand: positive pole of DC power supply (5V, 12V and 24V modules are available). 2. DC-: negative pole of DC power supply 3. CH1: Input detection interface, active at high level. Relay output: there are 3-wire interfaces, and all interfaces have terminals. 1. NO: normally open interface of relay, which is suspended before being pulled in and shorted with COM1 after being pulled in. 2. COM: public interface of relay 3. NC: normally closed interface of relay, which is short-circuited with COM1 before being pulled in and suspended after being pulled in. FRM01 multi-function relay control module is specially designed for users with different needs. It uses a microcontroller as the main control unit, preset 18 functions, and the module adopts high-quality power relay, high-power high-voltage triode, red and blue signal indicators, and the board layout is comprehensive and stable, which can be widely used in power control occasions. Colour:As Shown Material:PCB Package Contents: 1 x FRM01 12V multi-function relay control module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.