• Loud internal audible alarm
  • Clear system integrity indication
  • Accepts industry standard 4-20mA inputs
  • Multiple units can be daisy-chained
  • Variable alarm configurations
  • Integral alarm outputs
  • Simple installation
  • Minimum maintenance
  • One button operation


Size210 h x 145 w x 46 d mm (8.25 x 5.75 x 1.75 inches)
Weight<500 g (1.1 lb)
Enclosure materialABS
Sensor connectionTwo or three wire connection to sensor via screened cable
Operating voltage13-28 V dc
Input type4-20 mA sink or source (selectable)
Panel indicationPower Healthy         Green LED
System fault              Amber LED
Alarm 1 & Alarm 2   Red LEDs
Fault current<3 mA and >23.5 mA (overrange fault)
Operating temperature-20°C to +70°C (-4°F to +158°F)
Storage-25°C to +65°C (-13°F to +149°F)
Humidity0-99% RH, non-condensing
Trip point hysteresisAlarm hysteresis set at approximately 0.5 mA
Fault hysteresis set at approximately 0.2 mA
Response timeTime to alarm <1 second
ConnectionsTerminals accept cables of cross sectional area 0.5 to 2.5 mm2
Relay outputsSingle pole change-over for use with dc signals
The relay contacts are rated 1A at 30 V dc
StandardsEMC EN50270
Ingree protectionIP20


Below is a small selection of the accessories available for the Gasflag.

100-240Vac to 24V (750mA) power supply

100-240Vac to 24V (750mA) power supply


Enables Gasflag to be easily powered from a 100-240Vac mains power source. (Gasflag can also be ordered with this power supply from new, specify part number C01818 if this is required.)