Multi-Purpose Smoke Detector

Multi-purpose Resettable Type

This unit has designed for relay output feature with optional individual power source and it has been used widely in the current market. This resettable detector is not only use as a fire alarm system but will also supervise input power via an optional relay output for power breakdown or wire break. Fault relay contact will open when power breakdown occur and fire alarm signal will transmitted to connected system or computer terminal when detector is activated. When the alarm signal is absent the detector will automatically return to standby status. Optional built-in buzzer can sound a warning at the first sign
of fire. This detector is currently used quite often in security systems and is also promoted for use in communications, banking, shipping or the art business.


  • Special chamber design has greatly decreased dust levels and improved detection accuracy.
  •  Dual LEDs for 360-degree visibility.
  • Advanced technology enables this detector to increase its precision in fire detection, improve signals to avoid noise interference and thus reduce unwanted false alarm.
  • Low current consumption that allows more detectors to be used with each control panel.
  • Dual contacts on the base which enhance the connecting stability between sensor and base.
  •  All bases are fitted with a shorting spring to permit maintenance without disconnecting when removing the detector head



AH-0311 Multi-Purpose Smoke Detector

Model AH-0311-2 AH-0311-3 AH-0311-4
Voltage Range 12 ~ 30V DC
Standby Current 35μA
Alarm Current@24V DC 470Ω 40mA 30mA 40mA
Sensitivity Setting Comply to EN54 
Ambient Temperature -10℃ ~ +55℃
Material Fire-proof plastic
Dimensions 102mm(Dia.) x 49mm(H)
Weight 155g 157g 165g
Color White

Specification (Resettable)

Model AH-0311-S AH-0311-BS AH-0311-BPS
Alarm Current  15mA 50mA 80mA
Standby Current 115μA 115μA 15mA
Voltage Range 12VDC 12VDC 12VDC
Weight 168g 170g 170g

Effective Alert Area

Building Height Area Covered
Under 4M 150 M2
4 ~ 20M 75 M2

Order Information

AH-0311-2 2-wire
Ah-0311-3 3-wire with remote indicator output
AH-0311-4 4-wire with relay output

Order Information (Resettable)

AH-0311-S +Relay Outout
Ah-0311-BS +Buzzer + Relay Output
AH-0311-BPS  +Buzzer + Power off & Wire Disconnection Warning + Relay Output