Bosch D3939 ceiling mount panoramic motion detector provides first step processing with fully adjustable optics for coverage integrity. Model: DS939 Up to 7.6 m (25 ft) mounting height Fully adjustable optics for coverage integrity and customization Hinged chassis and base plate for easy installation High efficiency LED and light pipe system for easy walk testing First Step Processing (FSP) 360° x 21 m (70 ft) diameter pattern Properties: Modular chassis and hinged mounting base design provide easy access to field setup switches and wiring. Dimensions: 8.9 cm x 17.8 cm (3.5 in. x 7 in.) Operating Temperature: -40°C to +49°C (-40°F to +120°F)For UL Certificated installations, 0°C to +49°C (+32°F to +120°F) Sensitivity: Low/High gain settings Complies with Environmental Class II (EN50130-5) Height Range: 3 m to 7.6 m (8 ft to 25 ft) recommended Location: Mounts directly to ceiling or to standard 10.2 cm (4 in.) octagonal electrical box. Internal Pointability: Coverage is adjustable ±10° horizontally, +2° to -18° vertically. Alarm Relay: Silent-operating form C relay. Contacts rated 125 mA, 28 VDC, 3 W maximum for DC resistive loads. Tamper: Normally-closed (with cover in place) tamper switch. A wall (base) tamper is included. Contacts rated at 28 VDC, 125 mA, 3 W maximum. Current: 12 mA standby; 39 mA in alarm with LEDs enabled Voltage: 9 VDC to 15 VDC Shop CTC Communications for best deals Bosch Security Products