The Additel ADT949-AF is a high-accuracy, handheld digital pressure calibrator with a wide pressure range of -14.5 to 3000 psi (-1 to 200 bar). It features a built-in pressure sensor with an accuracy of ±0.025% of reading, and a resolution of 0.001 psi (0.0001 bar). The ADT949-AF also includes a built-in 24-bit A/D converter, which provides high-resolution measurements. It has a large, backlit LCD display that shows the pressure reading, as well as the minimum, maximum, and average values. The ADT949-AF is powered by a rechargeable lithium-ion battery, which provides up to 20 hours of continuous operation. It also includes a carrying case, a pressure hose, and a calibration certificate.