... power consumption, hight efficiency; Suitable for any access control system (reader, exit button, intercom); Lock Size: L340*W41.4*H20. ... residual magnetism design;Fail safe;OEM support;Warranty: warranty for two years,maintenance forever, change within 3 months ... contact current 3AAdvantage:Lower power consumption, hight efficiency;Suitable for any access control system (reader, exit button, intercom ...