Bosch Wireless Detector, Radion RFPR-12

Pet Immunity: Supports pets up to 13 kg (30 lbs). It can distinguish between one dog (13kg), two smaller dogs (totaling 27kg), or up to ten cats.

Battery Life: Up to 5 years using a single user-replaceable CR123A Lithium battery.

Draft & Insect Immunity: The optical chamber is completely sealed to prevent false alarms from small bugs or air currents.

Mounting Height: Flexible mounting height from 2.1 m to 2.7 m (7 ft to 9 ft) with no physical adjustments required to the lens.

Supervision: Automatically monitors and reports low-battery, cover-tamper, and "wall-tamper" (removal from the mounting surface) conditions.