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Smoke Detector

#

Photoelectronic Smoke Alarm GB-2988

Advanced photoelectric technology GB-2988 series optical smoke detectors GB-2988 series optical smoke detectors are designed to respond to a wide spectrum of fires and ease installation.

 

Item NO:conventiona photoelectric smoke alarm GB-2988 series
ProductName:smoke detector
Detailed:

Advanced photoelectric technology
GB-2988 series optical smoke detectors

Gb-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.

 

 

the range

gb-2988-2

2-wire optical smoke detector-----

gb-2988-2-led

2-wire optical smoke detector with remote led indicator output

gb-2988-4

4-wire optical smoke detector with relay output

 

 


features and benefits

  • 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

available options

  • sensor base: standard and shottky diode
  • remote led
  • comply with en54 and ce

 

 

specification

 

model                  

2/4 wire

volt. dc

startup current (max)

alarm current (max)

permis. current (max)

alarm contact

gb-2988-2

2

12~35v

35 μa

70 ma

80 ma

 

gb-2988-2-led

2

12~35v

35 μa

70 ma

80 ma

 

gb-2988-4-12

4

10.2
~13.8v

35 μa

35 ma

80 ma

nc  or no

gb-2988-4-24

4

20.4
~27.6v

35 μa

35 ma

80 ma

nc or no

 

 

 

 

 

 

 

 

 

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 μa 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

-10°c to 50°c

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