The electric bolt which is under special waterproof , can be used both indoors and outdoors.The bolt is made of solid 304 stainless steel, which is finished by CNC lathe with exquisite workmanship and can withstand impact of 1400KG.Real-time monitoring of door/lock status, door signal output contact NO/COM , lock signal output contact NO/NC/COM, the lock signal will not be displayed until the bolt is fully inserted.Durable solenoid valve, service life is more than 500,000 times.