TA-2988 series optical smoke detectors are designed to respond to a wide spectrum of fires and ease installation. Every unit is individually tested and calibrated to ensure high reliability and prevent false alarms
Advanced photoelectric smoke sensing technology
Durable sensor head; Excellent smoke access
Ar (auto reset) function for security systems(optional for 4 wire models)
N/c (normal/close)-n/o (normal/open) selectable relay output
Easy installation and maintenance
Modern design (white and beige colors)

Freq.: 3~5 sec
Five-year limited warranty
Sensor base: Standard and shottky diode
Remote LED
Comply with en54 and CE
Smoke sensitivity: EN 54-5/7: 2000 standard
Detection range: 100 square meters rating for smoke sensor; 50 square meters rating for heat sensor
Start-up current: 70 μ A maximum
Alarm impedance: For 2-wire models: 100Ω +3V max; 560Ω +3V max (red LED open circuit)

Alarm indicator: LED continuously emitting red light
Temperature range: -10C to 50C
Remote output: 15 ma max, diode gate
Humidity: 0 to 95% rh, noncondensing
Alarm contact: For 4-wire: N/o or n/c operation
Form a: 1.0A@30vdc/0.5A@125vac
Dimensions: 10mm (dia) x 46mm (ht) with base
Weight: 130g/set with base.