Door Access System Electric Power Supply Control with Adjustable Lock Time 0-15 Seconds DC 12V 3A / AC 110vBased delay control circuit, lock time can be adjusted from 0 to 15 seconds Set NC NO outputs, can control various types of electric locks Automatic protection from overload, over voltage, and short circuit Stable and reliable anti interference technology English instruction manual included This highly reliable door access control power supply provides very stable and reliable output in a various applications such as lock control, controller