Features: 1. 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) 2. Output Capacity: can control no more than DC 30V 5A AC or 220 V devices 5A 3. Optocoupler Isolation: improve the anti-interference ability, after the parameter setting, it will memory forever Specifications: Material: Electrical components Color: See pictures Size: 6.3x3.8x1.5cm Operating voltage: 6-30V Time interval:0.1 s (minimum) ~ 999 min (maximum) continuously adjustable Sleep Mode: C-P Sleep mode: within 5 minutes, no operation; nixie tube will close auto display, and a function program well Note: 1. 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 2. Relay contact is passive and electricity production; 1 channel has the control function on / off Package Includes: 1 x Cycle Timing Circuit Switch Relay