Specifications: Timing range: 0-999s 0-999m 0-999h. Supply voltage: AC110V-220V. Relay: 20A. Working current: 10A(max). Power: 500W(max). Size: 79*26*43mm. Hole size: 72*40mm. Instructions: Please pay attention for your first use. You need wait 6s after your setting data, the module will save the date you have set after 6s. Short press button SET: If you start the time setting mode , Nixie tube will blink. You could adjust the time T1 and T2 by button+ and button-. Please wait 5s after your setting date, the module will save the date you have set after 5s. Long press button SET: if you start the parameter setting mode. There are two group parameter for your choice : P0 and P1. You could switch P0 or P1 by short press SET. Under the parameter P0 and P1,you could set the timing mode by the button+ and button-. P0--0: Timing time mode: 0---999s. P0--1: Timing time mode: 0---999min. P0--2: Timing time mode: 0---999h. P1--0: The relay will connect after you delay the T1 time. P1--1: The relay will disconnect after you delay the T1 time. P1--2: The relay will connect after you delay the T1 time first, Then the relay will disconnect after you delay the T2 time, it finish. P1--3: The relay will disconnect after you delay the T1 time first, Then the relay will connect after you delay the T2 time, it finish. P1--4: The relay will connect after you delay the T1 time first, Then the relay will disconnect after you delay the T2 time, it is cyclic. P1--5: The relay will disconnect after you delay the T1 time first, Then the relay will connect after you delay the T2 time, it cyclic. Example: A customer needs 10 seconds to start up and 20 seconds off. Setup is as follows: T1 set time 10, T2 set time 20. P0 -- 0 (T1 time range is seconds). P1--5 (timer work mode). Package Included: 1 x Digital Display Time Relay