Manufacturer Rutherford Controls Model DSR01 Application DSS (Door Status Sensor) :The DSS option monitors the position of the door upon which the lock is installed. A SPDT reed switch mounted within the lock cavity eliminates the need for extra sensors to be installed on the door for notification of security or access control systems. The DSS option comes with a magnet pre-installed into the lock armature plate for signaling the reed switch in the housing when the door is closed. Care should be taken during the final testing of the lock to ensure that the DSS option is operating in the desired manner. Door Type Single Door Mounting Type Surface Warranty 1 Year Warranty Weight 4.0000