* The lowest nuisance alarm rates * Remote access for configuration and management (via databus) * Unique anti-vandal feature to detect changes in detectors alignment * 4 meter (13 ft) mounting height for minimal risk of vandalism * Integrated wall-mount bracket (except for PRO 250H) * Wide power supply range 10.5 to 30 V DC or * 24 V AC (auto-sensing) * Low installation and maintenance cost