Handheld Checkmate DL allows user to read corrosion data from datalogger or remote data collector and transfer it directly to computer. Transmitter and datalogger are explosionproof and intrinsically safe. Intended for Class I, Zone 1 or Class I, Zone 2, hazardous areas, system is able to capture and store readings of up to 50 different corrosion dataloggers or 57,330 Microcor datalogger readings. It requires 6 AA batteries and operates from -18 to +50°C.