Features:  
Made of high quality material, durable in use. It has 24 common functions to meet more application requirements Can control the solenoid valve, water pump, motor, light belt and so on. Low power consumption, superior performance. The product has a wide range of applications and can be used in many fields.  
Specification:  
Model: YYC-2S  
Material: Plastic  
Weight: 30g/1.1oz  
Voltage: 5V, 12V, 24V (Optional)  
Output power: DC or AC load within 5A can be controlled  
Time range: 0.01 seconds to 999 minutes can be adjusted at any time  
Description of wiring port:  
1. DC+ : input the positive pole of DC power supply  
2, DC- : input DC power supply cathode  
3. IN+ : signal input is positive  
4, IN- : signal input terminal negative  
5. NO: the relay normally opens the interface, and the relay is suspended before absorption, and is connected with COM short after absorption  
6. COM: relay public interface  
7. NC: the relay normally closes the interface, and the relay is short connected with COM before absorbing and suspended after absorbing.  

Key setting instructions:   
Power on display "-------" means to enter standby state;  
Press K1 for the first time (it takes more than 1 second to be effective to prevent false triggering), and it shows: p-11: K2 adjusts the main mode, K3K4 adjusts the function  
Press K1 the second time, the screen will show: a001:k2 and K3 to adjust the first time A and K4 to adjust the decimal point (time unit).  
Press K1 for the third time, and the screen will show: b001:k2 and K3 to adjust the second time B and K4 to adjust the decimal point (time unit)  

Package List:  
1 x Timer Relay

For more information refer below link

https://www.youtube.com/watch?app=desktop&v=ZRAaTRKRmh0&t=641s&ab_channel=Robojax