Techno Tools’ D440A features a long life heated sensor technology that is designed to detect the more current and difficult HFC refrigerants such as R-134a in addition to all HCFC and CFC refrigerants including hydrocarbon “blends”. The D440A’s unique digital leak size indicator takes the guesswork out of whether or not to repair a small leak. The digital display is independent from the audio alarm and sensitivity level, allowing the precise pinpointing of the leak source. Automatic calibration and reset to ambient levels. Other features include: true mechanical pump, low battery indicator, audio mute function and comfortable neoprene grip. The D440A uses standard AA alkaline batteries.
