... lock. The working way: lock with power on , and unlock with power off. Matches the access control system , can be assemblied onto the ... 0 second, 3 seconds, 6 seconds, 9seconds; Work power supply: DC12V(with back circuit protection), low heat. current for starting: 800mA work ... 15.5mm stainless steel lock core, length of popup : 15mm Supply CN Low temperature electric lock