YS-134E-IP/134BE-IP is a narrow type adjustable European Adjustable Waterproof Electric Strike, which is designed for narrow wooden door, narrow metal doors and so on. Use metal structure, lock tongue use zinc alloy die-casting, panel use 304 stainless steel, durable, can withstand 300kg static strength. Security type: Fail Secure. Special design: Adjust the mechanical switch on the lock body to make the electric strike keep unlocked (it remains unlocked no matter the power is on or off).