An innovativ auto ON/OFF backlit feature give you fulltime display visibility and increased battery life.

Unscrew only one screw to remove battery door for battery replacement and fuse replacement, designed for user's convenience without opening the bottom case.

Safe and easy used optical interface to connect to PC for data acquisition. APPA 503 and 505 are self-calibrated in connection with calibrator and PC with calibration software. They also have self-data logging function without connecting to a computer.

Designed for harsh environments with water tight gasket as the seams rotary switch, input terminal and battery cover to keep out of dust, dirt and splashing. They can also take shocks and drops, work anywhere from indoor to outdoor.

Ergonomically designed slim shape protectiv holster that includes a built-in tilt stand, a nail hook, and convenient test lead storage. This holster provides an extra degree of protection and convenience for your meter.

Ergonomically designed test leads wi th comfort-grip, safety-shrouded, full-sleeve right-angle plug and hard alloy tips for long life. Screw-on insulated alligator clips are standard. Also supplied with a temperature adaptor and bead sensor.