This is the most sensitive and most advanced completely digital hand held leak detector available today. The ZX-1 eliminates false alarms from moisture, cleaners and solvents and allows you to home into even the smallest refrigerant leak without misleading feedback. Reliability is a key feature of the ZX-1 – the unit is equipped with a sensor failure indicator, a battery test function giving true voltage indication and a low battery indicator. The operator has a means of monitoring for the most common causes of poor or misleading performance in electronic leak detectors.