Features Sends a notification to the alarm panel when a door, gate or window is opened or closed.Enables two unique zones. One is for an internal magnetic reed switch while the second is for a normally-closed circuit that can have external devices wired to it.Can be painted to match its mounting surface.Sensor Dimensions: 4.6 x 2.1 x 1.5 inchMagnet Dimensions: 4.1 x 1.0 x 1.1 inchBattery life: Up to 5 yearsWireless Signal Range: 350 ft (106.7m), open air with Wireless Control PanelTransmission Frequency: 345 MHz