Photoelectric Smoke Detector

Photoelectric Smoke Detector

  • Contacts material is highly acid-resistant and rust-resistant.
  • Twin-color LED display enables viewer to easily identify the current status of detector.
  • Detector is made of high endurance, solid and colorfast Fire-proof plastic.
  • The standard detector is 2-wire or 3-wire. For 4-wire type just add one relay output module on 3-wire base. Simple and easy module placement enables wider application and flexible stock control.
  • Non-loosening screws on base terminal for easy installation.
  • Detector has passed strict EMC test, which greatly eliminates false alarms caused by interference from nearby sources.

Model AH-0621-2 AH-0621-3 AH-0621-4
Alarm Contact N/A N/A 0.8A @30V DC
0.4A @125V AC
Voltage Range 12 ~ 30V DC
Alarm Current
@24V DC 470Ω
50mA 59mA 45mA
Standby Current
@24V DC 470Ω
140 μA 25 ~ 75 μA
Sensitivity Setting Comply to UL 268
Ambient Temperature 0oC ~ +37.8oC
Material Fire-proof plastic
Dimensions (mm)
Dia. x H
102 x 48
Weight 130g 130g 145g
Color White

  Effective alert area

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

  Order information

AH-0621-2 2-wire
AH-0621-3 3-wire with remote indicator output
AH-0621-4 4-wire with relay output