The PG-100N series are for monitoring air pressure of various types of pneumatic equipment. High precision semiconductor chips provide excellent stability. Easy, one-handed operation and large 3½ digit LCD display make PG-100N ideal for field service calibration. The PG-100N series run on commercially available AAA batteries and lasts more than 1,000 hours on alkaline batteries. Automatic power shut-off helps prolong battery life. Zero-point adjustment can be done easily just by pressing the Zero button. Analog output is available using the connector located behind the battery lid. Pressure units can be changed in selected models.