Securitron UNL-12 Motorized Electronic Strike Assembly

UNL-12 UnLatch motorized electronic strike from Securitron is a concealed, motor-driven strike designed for cylindrical and tubular locksets, retracting the latch bolt under power for controlled entry while maintaining a clean door appearance. It operates on 12 VDC for the UNL-12 variant (with a tolerance of +20% / -10%) and is specified for 12/24 V configurations within the UNL family. The strike body measures 4.87 in in height, 1.25 in in width, and 1.50 in in depth, and it accommodates latchbolts up to 5/8 in. It delivers about 1500 pounds of static strength and is a fail-secure device, meaning it remains locked when power is removed; the system is fire-rated for 3 hours on a single door. The UNL-12 supports field-installable lock monitoring and can include a lock monitor as part of its configuration, while its design provides a fully concealed appearance on the door to deter tampering. It is listed for windstorm resistance and builds to multiple building-code standards, including UL 10C, NFPA-252, CAN/ULC-S104, and Florida Building Code approval (FL# 4310). This strike is intended for cylindrical or tubular locksets and is compatible with standard electrified strike installations, delivering motorized retraction without visible external hardware.