Elitech Digital Pressure Gauge can test pressure and temperature, featuring backlight, manual calibration, auto-off, units shift, low battery indicator, etc. With battery life up to six months, the HVAC manifold gauge is applied for monitoring pressure of pipelines and pressure vessels in refrigerant and maintenance. As a professional ac gauge manufacturer, our refrigerant gauges are high quality and widely used in hvac/ac maintence service. Elitech aims to provide the best digital manifold gauges for hvac/air conditioning technicals.