This supervised sensor transmits wireless signals to thePRO2000security console when a door or window is opened. Install up to 16 sensors. Mount at your door or window using the provided foam tape or screws. Up to four additional magnetic switches may be added to this transmitters (counts as one zone). Switch to settable for instant alarm mode or as a delayed sensor. Use with any sensor that either opens or closes a dry contact when triggered. Uses two AA batteries.X10-compatible Wireless Door/Window SensorX10 Format-Security& Automation for the ProfessionalSends radio frequency signal toX10 Security System model PRO2000VPandPRO2000 Digital Consolein response to a door or window separating from the included magnetic switch (Sold Separately).Perfect for any homeProtects swinging doors, sliding doors, windows, and other entrances.Requires 2 AA batteries.One Year Manufacturer WarrantyProgramming Instructions