Material: Electrical components.Operating voltage: 6--30V.Trigger Signal Source: High Level Trigger (3.0 V-24 V), signal ground and system ground are not common, which can increase anti-interference abilit.system (short circuit can also connect with a ground common) Output Capacity: can control no more than DC 30V 5A AC or 220 V devices 5A. Optocoupler Isolation: improve the anti-interference ability, after the parameter setting, it will memory forever . Warning: Relay contact is passive and electricity production; 1 channel has the control function on / off. Operation mode:P1: After triggered signal, power relay on time OP, then turn off; within the OP period following operation: 1) P1.1: signal being triggered again is not effective 2) P1.2: signal being triggered again, start time again 3) P1.3: signal being triggered again, reset; disconnect relay, stop timing P2: giving the trigger signal, the time after shutdown relay CL power relay OP time; then timing, turn off the relay P3.1: give the trigger signal after the power relay on time OP, CL shutdown time relay; then operating cycle above cycle gaive signal again, shutdown relay stop timing; cycle times (LOP) can be set P3.2: after connecting. no need to trigger signal, power relay on time OP, CL shutdown time relay; then the operating cycle above timea cycle (LOP) can be set Q4: keeping the function of the signal; if there is no trigger signal, the time will be canceled, relay stay connected; when the signal disappears, timing OP turn off the relay; over time, if no signal again, the time is cleared Expansion Function Key STOP: Sleep Mode: C-P Sleep mode: within 5 minutes, no operation; nixie tube will close auto display, and a function program well The d-Normal Mode: nixie tube show ever Note: Press and hold STOP button for 2 seconds can achieve change from C-P to O-d; Current state will flash and then return to the main interface Size: 6.3*3.8*1.5cm/2.48"*1.50"*0.59" Package includes:1Pc x Cycle Timing Circuit Switch