The Additel ADT672-10-AP30-PSI-N is a high-accuracy, loop-powered pressure calibrator that offers exceptional performance and reliability. Its unique features include: Accuracy of ±0.025% of reading, making it one of the most accurate calibrators on the market Wide pressure range of -14.5 to 30 psi, covering a wide range of applications Loop power supply capability, eliminating the need for an external power source Rugged and durable construction, ensuring reliable operation in harsh environments* Easy-to-use interface, making it simple to set up and operate