This combined RH humidity and temperature meter is ideal for environmental monitoring of showcases, archival sections and storerooms. Temperature accuracy +/- 1˚C (0-40˚C)Humidity accuracy +/- 5% (25% to 95%)Two 23mm hi-contrast LCD displaysCase incorporates a key way for wall-mounting and a flip-out desk standMin/max memory is continually updated for both temperature and humidity values since last memory resetSupplied with instructions and 1x 1.5V AA battery