OCB-11RT

OCB-11RT: 1" Concealed Recessed Magnetic Contact with Screw Terminals

In high-end residential, commercial, and architectural security systems, installing concealed contact sensors ensures full perimeter supervision without cluttering door frames with visible hardware. The OCB-11RT is a professional 1-inch ($25.4\text{ mm}$) recessed magnetic contact designed to fit flush into pre-drilled holes in wooden, vinyl, and composite door jambs.

Built-in Screw Terminals & Press-Fit ABS Casing

Unlike standard pre-wired recessed contacts that require wire splices inside small frame cavities, the OCB-11RT is equipped with integrated screw terminals. This design allows field technicians to terminate zone wiring directly onto the contact body, simplifying installation and eliminating loose wire connections inside wall frames. Constructed from flame-retardant ABS plastic with retention ribs, the casing presses securely into 1-inch mounting holes for a clean, flush finish.

Reliable Reed Switch Sensing & Universal Integration

The sensor utilizes a hermetically sealed internal reed switch mechanism providing a reliable operating gap of 15 mm to 25 mm. This wide sensing range prevents false alarms caused by natural door movement, hinge sagging, or thermal frame expansion. The OCB-11RT connects seamlessly to any conventional hardwired intrusion alarm panel, access control system, or home automation controller.