Interlogix SAW Wireless Indoor PIR Motion Detector, Pet Immune (40 Lbs.), with Lithium Battery (60-807-01-95R) Pet Immunity Signal Processing Prevents False Alarms Lithium Battery for Extended Battery Life; Low Battery Reporting Indicates When Batteries Need Replacing Before They Expire Cover Tamper Switch Detects Potential Disablement or Damage to a Sensor By an Intruder Wireless and Battery Powered Unit is Easy to Install Fully Supervised Device Sends Signal Every 64 Minutes to the Security Panel