General Details

Heat detector:

Heat detector SR-503 Series

SR-503-2 2-Wire network heat detector

SR-503-4 4-Wire network heat detector

 

Main Features:

Combination rate-of-rise and fixed temperature alarm

MCU processing, eliminate false alarm

Low standby current

Anti-RFI &Anti-EMI

9-35VDC wide operating voltage range

LED flashing visible in 360 degrees direction

Power supply non-polar input

Remote LED indicator output (2 wire)

Rustproof, mothproof, anti-light interference design

Execute criterion: GB4716, EN54-5

 

Technological details

Model No.

SR-503-2

SR-503-4

Operating voltage

DC 9V-35V

Static current

≤50uA

12mA(NC);2 mA (NO)

Alarm current

35mA(12V); 83 mA (24V)

5mA(NC); 15 mA (NO)

Alarm output

Remote LED indicator

Relay output

Alarm temperature

Rate-of-rise alarm: temperature rising rate>8℃

Fixed temperature alarms: 57℃(135℉)

Installation

Ceiling mounted

Working environment

-10℃~+50℃, Humidity ≤95%RH

-10℃~+70℃

Dimension

Ф100*48mm