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Home>Fire & Life Safety>Devices>Gas Detectors>Discontinued
Macurco/3M GD-21, 120VAC Combustible Gas Alarm
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The GD-21 is a 120VAC combustible gas detector

Macurco/3M GD-21, 120VAC Combustible Gas Alarm

Item Id:MA-GD21
Manufacturer: Macurco
Mfg Part#: GD-21
Not for Sale
Retail Price: $184.83
Your Price: Discontinued
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The 3M/Macurco GD21 has been discontinued and replaced by the 3M/Macurco GD-6

  • Detects many combustible gases: Natural Gas, LP, Propane, Butane, and Gasoline Fumes.
  • Standard Calibration setting is 25% of LEL (Lower Explosive Limit) for natural gas (for other calibrations, please call)
  • Loud Buzzer (similar to a smoke alarm buzzer) wakes even heavy sleepers.
  • Stand Alone Unit: Plug into any 120 VAC power outlet.
  • Ignition protected: Explosion Proof Design.
  • Maintenance free electronic sensor, supervised.
  • Small, compact, attractive white case.
  • Easy to install: Just hang unit on a screw or nail, and plug it in.
  • Special calibrations are available.

Detector Location

WHERE: Gas detectors should be placed near the source of the potential leak, namely near a gas appliance such as a furnace, water heater, or gas log fireplace. Because of various odors and gases given off in cooking, place the unit near, but not in the kitchen.

MOUNTING HEIGHT: For natural gas and methane which are lighter than air, mount the unit 1 ft below the ceiling. For propane, LP, and other gases that are heavier than air, mount the detector 1 ft above the floor


POWER: 120 VAC, 60 Hz
CURRENT: Less than 10 watts
COLOR: White
ALARM SOUND: 88 dB @ 10 ft
ALARM SET POINT: 25% of LEL natural gas
SENSOR LIFE: 7 10 years
SIZE: 4 1/2 x 3 1/4 x 1 3/4 inches

Macurco/3M GD-21, 120VAC Combustible Gas Alarm
Macurco/3M GD-21, 120VAC Combustible Gas Alarm
Macurco/3M GD-21, 120VAC Combustible Gas Alarm
Macurco/3M GD-21, 120VAC Combustible Gas Alarm

Accessories designed for use with this product - To add any of these accessories to your order, simply fill in the quantity you want and click the large "Add to Cart" button above

Product Name/Description Price Quantity
Macurco/3M GD-21, 120VAC Combustible Gas Alarm Macurco/3M GD-21, 120VAC Combustible Gas Alarm [ITEMPRICE] [ITEMPRICE]
The GD-21 is a 120VAC combustible gas detector
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