Description FEATURES * Professional Humidity measurement with fast response time. * Temperature emperature measurement with ℃, ℉ unit. * Two displays, show Humidity/Temperature value at same time. * Bright LCD display. * Microprocessor circuit ensures high accuracy and provides special functions and features. * Data hold to freeze the display value. * Internal ℃, ℉ selection with default. * Auto power off saves battery life. * Operates from DC 1.5V ( UM4/AAA ) x 4 PCs batteries. Durable, long-lasting components, enclosed in strong, compact ABS-plastic housing. GENERAL SPECIFICATIONS Display LCD size : 28 mm x 19 mm. Display Direction Normal or reverse Unit Temp. , ℃ ℉ Humidity %RH Circuit Custom one-chip of microprocessor LSI circuit. Sensor Structure Humidity Capacitance humidity sensor, semiconductor Temperature Semiconductor Data Hold Freeze the display reading. Sampling Time Approx. 1 second. Power off Auto shut off saves battery life or manual off ( REC function ). Operating Temp. 0 to 50 ℃. Operating Humidity Less than 80% R.H. Power Supply DC 1.5 V battery ( UM4/AAA ) x 4 PCs, Power Current Approx. DC 6.5 mA. Weight 157 g/ 0.35 LB. Dimension 210 x 40 x 40 mm (8.3″ x 1.6″ x 1.6″) Accessories Included Instruction manual…………………………………………….1 PC Optional Soft carrying case with sash Accessory ( 210 x 80 x 50 mm ), Model : CA-52A ELECTRICAL SPECIFICATIONS (23± 5 ℃) Humidity Range 10 % to 95 % R.H. Resolution 0.1 % R.H. Accuracy ≧70% RH ± (3% reading 1% RH). < 70% RH – 3% RH. ± 3% RH. Temperature Measuring Range 0 ℃ to 50 ℃/32 ℉ to 122 ℉ Resolution 0.1 ℃/0.1 ℉ Accuracy ± 0.8 ℃/1.5 ℉