System Sensor PR-2 10/02 The DSC WS4945N wireless door/window

The DSC WS4945N wireless door/window normally open contact features a pre-installed battery that is activated by installers through a pull tab

This innovative detector is designed to provide comprehensive fire and life safety protection for residential and commercial buildings

Its durable

Download COSMO-4W Datasheet (PDF)

System Sensor PR-2 10/02 The DSC WS4945N wireless door/windowPR 1 PR 2 PR 3 are epoxy encapsulated multi voltage relays. They are single pole double throw relays that use a red LED as a visible indication of relay coil energization. PR3 is identical to PR2, except it has an extra pair of wires for redundant power input.