Features: Stainless steel brushed panel, zinc alloy Integrated molding lock body.Wider strike opening suitable for more more mortise or cylindrical type lockset.Can be used to convert cylindrical lock sets into an electronic access controlled locking system.With two contacts and no polarity requirement.Fits either right hand or left handed doors, such as wooden door, metal door, PVC door, etc. *** This wider strike opening electric strike is fail-secure type lock, unlocked while supplied with power.*** Package List: 1 x Strike Lock1 x Screw Kits1 x User Manual Specifications: Strike opening wide: 1.73 inch (44mm) Type: fail-secure typeSafety type: power-off lockedMaterial: stainless steel / zinc alloyWithstand Tension: 1000lbPerformance Testing: 1000000 times aging testInput Voltage: DC12V，Operating Current: 240mAApplicable Door Type: wooden door, metal door, PVC doorSurface Temperature: within +20℃ / 68℉Suitable Temperature: -10℃~+55℃(14℉-131℉)Size: 5.86x1.34x1.54in / 149x34x39mm, Weight: Approx. 0.75lb Zinc Alloy Integrated Molding Stainless steel brushed panel, zinc alloy Integrated molding lock body, high-quality materials, special technology, low power consumption and low heat generation, sturdy and durable. Easy to Install Electric strike lock is specially designed to fit most metal or wooden doors, fits either right hand or left handed doors, only minimal cutting required of the door frame beyond the hole for the strike. No Polarity Requirement Working with DC 12V, no polarity requirement. (Polarity if a diode is installed). Convert cylindrical lock sets into an electronic access controlled locking system. Wiring diagram Notice: "power supply, access control keypad, exit button" are not included in this package Wider strike opening: The electric strikes with 5.86" (149mm) faceplates are designed with up to 1.73"(44mm) strike opening, suitable for more mortise or cylindrical type lockset, testing to 1000000 cycles, stable and reliable.