X10 Security Alarm System Motion Sensor MS10A Pre MS18A

BRAND NEW but OLD STOCK X10 Powerhouse brand model number MS10A. For use with the X10 wireless security systems. Sets off the alarm when motion is detected. Requires 4 AA batteries for operation (not included). For indoor use only. RF transmission range allows it to be placed up to 100 feet from the security system console. Color is white. Adjustable mounting bracket and screws are included. You can view the instructions online in PDF format by clicking here. Shipping weight for one: 8 ounces. This is the X10 Powerhouse brand wireless supervised P.I.R. (passive infrared) motion sensor model number MS10A for use with any X10 wireless security system base receiver (PS561, SC1200, or DC821) or it can be added to any X10 wireless security system (DS7000, SC1200, DC8700, SS5400, SS5402). Also works with some Radio Shack wireless security systems. When motion is detected, the sensor sends an RF signal back to the security console setting off the alarm. This sensor is first initialized i