DSC WS4945N Door/Window Contact, Wireless, Normally Opened

The DSC WS4945N is a wireless door/window contact designed for integration with compatible DSC security systems. It uses reliable 433 MHz wireless communication and includes a normally open external contact input for flexible security applications. The device incorporates a built-in reed switch, PCB antenna, and tamper protection for the case and wall mounting. A CR2 3 V lithium battery is included and typically provides 5 to 8 years of service. Its compact housing supports convenient installation on doors, windows, and other protected access points. The WS4945N is intended to detect opening events and transmit status changes to a compatible alarm control panel, providing dependable perimeter security in residential and small business environments.