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Macurco GD-2A, Combustible Gas Detector, 12-24 VAC or VDC
Macurco GD-2A, Combustible Gas Detector, 12-24 VAC or VDC

Macurco GD-2A, Combustible Gas Detector, 12-24 VAC or VDC

Manufacturer Part#:70-0715-6468-9
Our Part#:70-0715-6468-9
Stock Status: Call for Availability
Your Price:$136.94









Feature 5




Feature 7

Detection Type:Propane,Methane|Product Type:Detector|Input Voltage:12VAC,12VDC,24VAC,24VDC|Intended Use:Commercial/Industrial|Connection Type:System|Product Status:Current|Battery Backup:No
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The GD-2A is a direct replacement for the discontinued GD-1-SPC-PRO and GD-1-SPC-NG


  • Detects Heating Gases: Propane (LP), Natural (Methane)
  • Easy Operation: A green LED signifies that the GD-2A is armed. If gas is detected, the red LED flashes and the alarm condition is activated.
  • Quick Installation: Three part plastic case allows for easy surface mount installation or near flush mount over a four-inch square or double gang electrical box.
  • Maintenance Free: The GD-2A uses a self-purging semi-conductor electronic sensor which requires no maintenance or recalibration.
  • Self-Restoring or Latching Functionality: Allows installer to choose whether GD-2A will switch back to normal state after air clears of gas, or stay in alarm until power is interrupted.
  • SPDT Alarm and SPST Trouble Relays: Designed for seamless connection to control panels or other devices.
  • Temperature Compensated: For accuracy over the entire operating range.
  • Time-Honored Quality: Backed by Macurco's reliable brand quality and 3M's history of customer dedication and satisfaction.
  • Listed to UL Standard 2075 for the standard for safety for gas and vapor detector and sensors.
  • Sensitivity Tested based on UL 1484 Standard for Residential Gas Detectors.

Power Information

  • Operates on DC or AC voltages between 12 and 24 volts.
  • Utilizes a full wave bridge rectifier at its power input so that it is independent of the polarity of the input power.
  • Switching regulator is used to efficiently match the wide input voltage range to the fixed, internal power system.

Visual Display

  • Green LED light blinks on and off during the warm up period.
  • Continuous green light (ARMED) indicates normal operation.
  • Both lights flash on and off when a trouble condition occurs.
  • Red LED (ALARM) turns on at the same time the SPDT alarm relay activates to indicate the alarm condition.

Advanced Relay Features

  • Self-restoring operation turns off red light when air clears of gas, switching to normal state.
  • Jumper wire on circuit board can be clipped to allow unit to latch in upon alarm. Power will then need to be interrupted to unlatch alarm condition.


  • Designed for connection to UL Listed Fire Alarm/Burglary Control Panels. Do not connect the GD-2A to Fire Alarm Circuits, or Burglar Alarm or other signals.
  • Alarm Control Panel must be dedicated to gas detection or have alarm devices that provide a distinctive alarm for gas detection.
  • Intended for installation in buildings in non-hazardous locations such as residences, retail stores and office buildings.


Size 4.5" x 5" x 1.625"
Shipping Weight 0.54 lbs
Voltage 12 to 24 VAC or VDC
Current (non-alarm) 45 mA @ 12VDC, 22mA @ 24VDC, 65 mA @ 12VAC, 45 mA @ 24VAC
Current (in alarm) 70 mA @ 12VDC, 35 mA @ 24VDC, 100 mA @ 12VAC, 65 mA @ 24VAC
Color White
Sensor Maintenance Not required
Alarm Relay Rating 0.125 Amps, 24V, 3VA
Trouble Relay 0.250 Amps, 40V, 10VA
Operating Temperature Range 32° to 120° F
Alarm Set Point Per UL 1484 (25% LEL)

The GD-2A does NOT detect carbon monoxide.

5 Stars
so far so good
Bought to replace an old gas detector and installed it. It is been installed for about 1 month and seems to be doing the job as expected. Of course I will not know this for sure until it detects a gas leak if any (which I hope does not happen ever). I will buy again if needed.
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from Winston Salem, NC. on 11/25/2012
5 Stars
Great price, fast shipping Will use this seller again
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from Kennewick. on 10/1/2012
5 Stars
Peace Of Mind.
Put Macurco GD-2A, Combustible Gas Detector into service about 6 months ago. Using standalone in 4x4 box with extension collar. Connected to Sonalert for warning and Linear Regulated 12VDC wall wart for power. Passes butane lighter test. ( You have to hold lighter near it for a while to trigger.) Clears in reasonable time. No false alarms. Very satisifed.
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from NY NY. on 8/9/2012

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