Features: Wide DC power supply voltage from 6V to 30V, support micro USB 5.0V power supply, very convenient to use. Interface is clear, simple and powerful, easy to understand, almost meet all your needs. The module supports reverse input protection, and there is a STOP button for emergency stop function. Added sleep mode, it will automatically turn off display if no operation in 5 minutes after enabled, and you can press any button to wake it up. You can set different OP, CL, LOP parameters, these parameters were independent of each other and saved respectively. All set parameters will be automatically saved if there is a power failure. With optical coupling isolation, improved anti-interference ability, industrial level circuit board. Specifications: Voltage: 6V~30V(support micro USB 5.0V) Quiescent Current: 20mA Operating Current: 50mA Operating Temperature: -40℃~85℃ Size: Approx. 6.2*3.8*1.7cm / 2.44*1.49*0.67" Timing Range: 0.1seconds to 999 minutes(continuously adjustable) Instruction: Operation Mode: P1: After triggering signal, switch is connected for "OP" time, then disconnected; within the " OP" time: P1.1: if trigger signal again, it is invalid. P1.2: if trigger signal again, restart timing. P1.3: if trig ger signal again, switch is disconnected, stop timing. P-2: After triggering signal, switch is disconnected for " CL" time, then switch is connected for " OP" time, and disconnect after timing. P3.1: After triggering signal, switch is connected for " OP" time, then switch is disconnected for " CL" time, and enter loop. If trigger signal during loop, switch is disconnected and stop timing. The loop times (LOP) can be set. P3.2: After power on, no need trigger signal, switch will be connected for " OP" time, then disconnected for " CL" time, and enter loop. The loop times (LOP) can be set P-4: Signal holding function. If there is trigger signal, timing will be reset, switch remains connected; when the signal disappears, it will disconnect after " OP" time. During timing, if there is a signal, timing will be reset. OP: Connect time. CL: Disconnect time. LOP: Loop times(1~999, " ---" indicates infinite times) All above parameters are independent from each other, but all modes use the same parameters. For example, if set OP time as 5 seconds in P1.1, then change to P1.2, then the OP time in P1.2 will also be 5 seconds. Press SET button at the main interface (display 000), it will show OP(CL, LOP) and corresponding time. If there is only OP mode (e.g. P1.1, P1.2, P1.3), press SET button to display OP and corresponding time only. If there are OP, CL, LOP modes (e.g.P3.1, P3.2), press SET button to display OP, CL, LOP and corresponding time. After setting mode, press SET button at the main interface to check the parameter of present mode. How to Choose Timing Range: After setting parameter in the interface selection mode, press the STOP button to select the time range: XXX. If the last decimal point lights up, the time range is 1sec to 999sec. XX.X If the second last decimal point lights up, the time range is 0.1sec to 99.9sec. X.X.X. If all decimal points light up, the time range is is 1 min to 999 min. For example, if you set OP as 3.2 seconds, the make the second last point light up, and it displays 03.2 How to Set Parameter: 1. Make sure operation mode. 2. According to the operation mode, at main interface(after power on, it will flash present mode then enter main interface), press and hold SET button for 2 seconds to enter mode selection interface, then press UP, DOWN button to choose mode (P1.1~P-4) 3. After selecting mode, press short SET button to set the corresponding parameter, then the parameter you want to set will flash. Press UP, DOWN button to set value, then press STOP button to select time range. Press SET button to set next parameter. 4. After setting mode parameter, press and hold the SET button for 2 seconds then the present mode will flash, and go back to the main interface. Main interface: when relay does not work, it shows "000" (no decimal point); when relay is working, it shows decimal point Mode Selection Interface: Press and hold SET button to enter. After setting, press and hold SET button to back to main interface. Relay Enable Mode: 1. NO: Connection is allowed during OP time. 2. OFF: Connection is not allowed, always turne