The ceiling mount DS939 PIR Detectors provide up to 16.4 m (54 ft) panoramic coverage pattern and can be
mounted on ceilings as high as 6.1 m (20 ft). With three separate PIR sections that are fully adjustable,
the DS939 detectors provide coverage integrity at all mounting heights, plus the ability to customise the
coverage for specific areas. The DS939 detectors use several processing techniques to provide excellent
catch performance with freedom from false alarms.
Features:
Electrical
Current: 12 mA standby; 20 mA in alarm with LEDs enabled
Voltage: 9 VDC to 15 VDC
Environmental
Operating Temperature: -40 ℃ to +49 ℃ (-40 ℉ to + 120 ℉)
UL: 0℃ to +49 ℃ ( +32 ℉ to +120 ℉)
EN/NFA2P: -10 ℃ to +55 ℃ ( +14 ℉ to
+131 ℉)
Sensitivity: Low/High gain settings
Complies with Environmental Class II (EN50130-5)
Mechanical
Properties: Modular chassis and hinged mounting base
the design provides easy access to field setup
switches and wiring.
Dimensions: 8.9 cm x 17.8 cm (3.5 in. x 7 in.)
Outputs
Alarm Relay: Silent-operating form C relay. Contacts rated
<100 mA, 25 VDC, 2.5 W maximum, < 20 Ohm closed
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