Flush mount Natural / Propane Gas detector.
12/24 Volt Ac or Dc operation.
The GD-2A is a low voltage (12-24 VAC or VDC) all electronic detector of combustible gases - that has been evaluated by UL for methane (natural) and propane (LP) gas.
The GD-2A is designed for connection to UL Listed alarm control panels (Fire or Fire/Burglar type or Critical Process Management Equiptment) - although it may be used alone - with UL Listed Class 2 limited energy power supplies.
The GD-2A has a SPDT Alarm relay - for connection to control panels or other devices.

Specifications:
Size: 4 1/2 X 5 X 1 1/2 inches
Shipping Weight: One pound
Voltage: 12 to 24 VAC or VDC
Current (non-alarm): 60 ma@ 12 V
DC, 30 ma @24 VDC
Current (in alarm): 83 ma @ 12 VDC, 42 ma @ 24 VDC
Color: White
Sensor Maintenance: Not required
Alarm Relay Rating: 0.25 Amps, 100V, 3VA
Trouble Relay: 0.50 Amps, 200V, 10 VA
Operating Temperature Range: 32 - 120 degrees F
Alarm Set Point: Per UL 1484 (25% LEL)