The Bosch DS835i provides immunity to false alarms caused by pets (one dog up to 100 lbs. / 45 kg, two dogs up to 60 lbs. / 27 kg, or up to 10 cats). Passive infrared and microwave processing provides excellent catch performance with freedom from false alarms. This small unobtrusive detector is simple to install and does not require field adjustments. The surface or corner mount DS835i provides a microwave frequency of 10.525 GHz and a coverage pattern of 35 ft. x 35 ft. (11 m x 11 m).
Bosch DS835i Specs