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 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). Press K1 for the fourth time, and "--" indicates standby state Press K4 in standby state to permanently close/open the display and switch to low-power mode. Description of decimal point time unit: X.XX decimal point in the hundreds place, timing range: 0.01 seconds to 9.99 seconds XX.X decimal point in the tens place, timing range: 0.1 seconds to 99.9 seconds XXX has no decimal point, timing range: 1 second ~999 seconds XXX. Decimal point in the ones place, timing range: 1 minute to 999 minutes. Package List: 1 x Timer Relay