Operating mode: P1: trigger signal, the relay is on "OP" time, and then disconnect; in the "OP" time, as follows: P1.1: signal is triggered again, invalid P1.2: signal is triggered again, the clock is reset P1.3: Signal trigger again, relay off, stop the clock; P-2: trigger signal, the relay off "CL" of time, the relay on "OP" time, and then disconnect relay; P3.1: trigger signal, the relay is turned on after the "OP" time, the relay off "CL" time, then the operation cycle, if the trigger signal period, the relay off, stop the clock; the number of cycles ( "LOP ") can be set. P3.2: without triggering signal, the relay is on "OP" time, the relay off "CL" time, and has been cycling; frequency ( "LOP") cycle can be set; P-4: signal holding function. If there is a trigger signal timing is cleared, the relay remains on; when the signal disappears, after the timing "OP" time, the relay is; if another signal during timing, timing is cleared; Product parameters: 1: Operating voltage: 5--36V. 2: Trigger Source: Active-high (3.0V-24V), have optocoupler isolation, can improve the system's anti-jamming capability (customers can also shorting common ground). 3: Output capacity: DC 5V - 36V, at room temperature, continuous current 15A, power 400W! Enhance heat dissipation conditions, the maximum current up to 30A. 4: Quiescent Current: 20mA; Operating Current: 50mA 5: Life: any switching times; Working temperature: -40-85 °; Size: 6.0*3.4*1.2cm. 6: With optocoupler isolation, enhanced anti-jamming capability, industrial grade board. Pay attention: The module is an active output, the output voltage equal to the input voltage. 2.'DC + 'and' load + 'This is an internal short circuit of the poles, but' DC- 'and' load - 'poles during use can not be shorted, otherwise the load can not be controlled on and off, which is equivalent load is been carrying electricity.