The DSC WS4945N wireless door/window normally open contact features a pre-installed battery that is activated by installers through a pull tab. This helps reduce installation time as casings don't need to be opened for battery insertion. Simply draw the activation pull tab and mount the contact. To help further simplify the installation process, DSC has placed the PCB on thecontact's cover.

The WS4945N has become the new DSC standard for door/window contacts due to its streamlined profile (30% smaller than its predecessor the WLS925L-433/ WLS935L) and new design that allows for double-sided tape mounting. These features combine to help get you in and out of your jobs faster than ever before. This model is designed for dependable case- or wall-tamper detection. Depending on how the contact is purposed, it will send a signal to the alarm system if either its casing is opened or if it is forcibly removed from a wall.If the alarm system is armed when this occurs, an alarm will be activated and the central station will be notified of the violation (if programmed to do so). It also features an external contact input that allows a standardhardwired door to be connected to it.