DR42A01 multifunctional delay relay control module, designed for the customers with different needs, use micro-controller as the main control unit, preset 18 kinds of functions, and can customize and add other specific functions based on user needs. The module adopts high-quality relay module, high-power high-voltage transistor, red signal lights, military grade double-sided PCB board to get stable performance, can be widely used in a variety of power control applications.Function Description:The user can select one of the following 18 kinds of function according to keys and display, can set and save the parameters of the 18 kinds of function, also can view the current function parameters.Gentle remind: Function 1-8 start automatically after power on; function 9-18 required a low level pulse signal to trigger and start (low level duration20ms); Function 9 is self-locking mode; Function 10 is a level control mode. Function 1:Timing Pull-in: After power on, when arrived the setting time T1, the relay pull in and the T1 can be adjustable between 0.1 second and 270 hours, give CH1 interface a low pulse signal(low level duration20ms), repeat the above function for one time. Function 2:Timing Disconnection: After power on the relay pull-in. When arrived the setting time T1,the relay disconnect, and the T1 can be adjustable between 0.1 second -270 hours. Send a low pulse signal( to IN1 interface, repeat the above function for one time.Function 3:Timing Pull-in Then Disconnect: After power on, the relay don't pull-in. Whenarrived the setting time T1, relay pull-in; when arrived the setting time T2, relay disconnect. And the T1 can be adjustable between 0.1 second -270 hours. Send a low pulse signal to IN1 interface, repeat the above function for one time.Function 4:Timing Disconnect Then Pull-in : After power on, the relay immediately pull-in. When arrived the setting time T1, relay disconnect; When arrived the setting time T2, relay pull-in. And the T1 can be adjustable between 0.1 second -270 hours. Send a low pulse signal to IN1 interface, repeat the above function for one time.Function 5:Unlimited Cycle Timing Mode A: After power on, the relay don't pull-in. When arrived the setting time T1, relay pull-in; When arrived the setting time T2, relay disconnect then repeat the above status. And the T1 can be adjustable between 0.1 second -270 hours. Send a low pulse signal to IN1 interface, restart the above function.Function 6:Unlimited Cycle Timing Mode B: After power on, the relay immediately pull-in. When arrived the setting time T1, relay disconnect; when arrived the setting time T2, relay pull-in, then repeat the above status. And the T1 can be adjustable between 0.1 second -270 hours. Send a low pulse signal to IN1 interface, restart the above function.Function 7:Limited Cycle Timing Mode A: after power on, the relay don't pull-in. When arrived the setting time T1, relay pull-in; when arrived the setting time T2, relay disconnect, then repeat the above status for "NX" times. T1 and T2 can be adjustable between 0.1 second -9999 seconds, the cycle times "NX" can be adjustable between 1-9999. Send a low pulse signal to IN1 interface, restart the above function.Function 8:Limited Cycle Timing Mode B: after power on, the relay immediately pull-in. When arrived the setting time T1, relay disconnect; when arrived the setting time T2, relay pull-in, then repeat the above status for "NX" times. T1 and T2 can be adjustable between 0.1 second -9999 seconds, the cycle times "NX" can be adjustable between 1-9999. Send a low pulse signal to IN1 interface, restart the above function.Function 9:Self-locking Mode: Send a low pulse signal to IN1 interface, the relay pull-in; Send again, the relay disconnect.Function 10:Trigger Mode: Contain delay off function, the relay does not operate after power on, Send a low pulse signal to IN1 interface, the relay pull-in immediately; when the low pulse signal disappeared, the relay still pull-in. When arrived the setting time T1, relay disconnect, T1 can be adjustable between 0 second-270 hours.Remark: in this mode, if T1 is 0 second, Send a low pulse signal to IN1 interface,the relay pull-in. When the low pulse signal disappeared, the relayimmediately disconnect.Function 11:Trigger Timing Pull-in: the relay does not operate after power on. Send a low pulse signal to IN1 interface, when arrived the timing time T1, the relay pull-in.,T1 can be adjustable between 0.1 second -270 hours. Send a low pulse signal to IN1 interface again, repeat the above function for one time.Function 12: Trigger Timing Disconnect: the relay does not operate after power on. Send a low pulse signal to IN1 interface, the relay pull-in. When arrived the timing time T1, the relay disconnect. T1 can be adjustable between 0.1 second -270 hours. Send a low pulse signal to IN1 interface again, repeat the above function for one time.Function 13: Trigger Timing Pull-in Then Disconnect: the relay does not operate after