Features 【Product Model】: YF-4 delay relay, 6 common functions: timing, delay, circular time, intermittent timing, etc., can meet more application needs. 【Double number display】: Double number display set by opening and closing the delay time, easy to read. 【Wide time range】: timer module can adjust time delay setting range: 0-999 seconds/ 0-999 minutes/ 0-999 hours. 【Parameters】: This adjustable cycle time relay input voltage DC 12V can control the AC/DC load within 5A. 【Wide application】: Digital timer delay can be used for various applications. Such as the start and stop of the electromagnetic valve, pump, engine, light string, etc. Features: 1. Delay relay, 6 kinds of common functions: timing, delay, cycle timing, intermittent timing, etc., can meet more application needs. 2. Dual digital display for setting of on and off delay time, easy to read. 3. The timer module can adjust the time delay setting range: 0-999 seconds / 0-999 minutes / 0-999 hours. 4. This adjustable cycle time relay has an input voltage of 12V DC and can control AC/DC loads within 5A. 5. Digital timer delay can be used for various applications. For example, it is used to control the start and stop of solenoid valves, water pumps, engines, light strings, etc. Function List: P1-1: After T1 delay time, the relay pulls in. P1-2: After T1 delay time, the relay releases. P1-3: After T1 delay time, the relay pulls in. After T2 delay time, the relay releases. P1-4: After T1 delay time, the relay releases. After T2 delay time, the relay pulls in. P1-5: After T1 delay time, the relay pulls in. After T2 delay time, the relay releases and repeat the cycle. P1-6: After T1 delay time, the relay releases. After T2 delay time, the relay pulls in and repeat the cycle. Button setting description: Setting button: long press 2 seconds to enter the function settings; short press to switch the parameter settings Increase button: increase time Decrease button: decrease time Confirm button: start/stop Timing range description: Timing range varies according the position of decimal point: XX.X - timing range: 0.1 seconds ~ 99.9 seconds XXX - timing range: 1 second ~ 999 seconds XXX. - timing range: 1 minute ~ 999 minutes. XX.X. - timing range: 1 hour ~ 999 hours Package list:  1 * Cycle Timer Relay Package List