Spec Sheet

GD-2A Specifications

• Size: 4 ½ x 5 x 1 5/8 inches

• Shipping Weight: 0.54 pound

• Voltage: 12 to 24 VAC or VDC

• Current (non-alarm): 45 mA @ 12 VDC, 22 mA

@ 24 VDC, 65 mA @ 12 VAC, 45 mA @ 24 VAC

• Current (in alarm): 70 mA @ 12 VDC, 35 mA

@ 24 VDC, 100 mA @ 12 VAC, 65 mA @ 24 VAC

• Color: white

• Sensor Maintenance: not required

• Alarm Relay Rating: 0.125 A, 40 V, 3 VA

• Trouble Relay: 0.250 A, 40 V, 10 VA

• Operating Temperature Range: 32° to 120° F

• Alarm Set Point: Per UL 1484, 25% LEL

Installation

The three part plastic case allows the GD-2A to be either surface

mounted or installed over a four-inch square or double gang electrical box, providing a near flush mount.

Location

A GD-2A is usually located in each room (except kitchens or bathrooms) where there are gas appliances or

through which gas pipes pass. Do NOT mount the GD-2A in a corner. Do NOT mount the GD-2A in kitchens or

bathrooms - alcohol’s, ammonia, cleaning solvents, paint thinner, gasoline vapors, and aerosol propellants

(aerosol cans such as hair spray usually contain a combustible gas) may cause alarms. Do NOT mount the

GD-2A where the normal ambient temperature is below 32° F (0° C) or exceeds 120° F (50° C). If the gas used

is natural gas (methane) mount the GD-2A on a wall about one foot down from the ceiling. If the gas used is

propane (LP), mount the GD-2A on a wall or column one foot above the floor. Use the same spacing as for smoke

detectors- 30-foot centers, 900 square feet per detector.

TYPICAL COVERAGE 900 SQUARE FEET

Gas Detection Experts

Made in the U.S.A. with US and imported materials

Macurco is a trademark of Aerionics, Inc.

TYPICAL CONNECTION OF TWO GD-2A TO AN ALARM CONTROL PANEL