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.
Reviewed by: Purchaser from NY NY.