Specification: Model: YYC-2S Material: Plastic Weight: 30g/1.1oz Voltage:#1 5V,#2 12V,#3 24V (Optional) Output power: DC or AC load within 5A can be controlled Time range: 0.01 seconds to 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+ : input is positive 4, IN- : 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 minutes. Package List: 1 x Timer Relay