1, digital thermometer, 2,CE and ISO certificate. 3,OEM accepted 4. Good design and quality We can supply many kinds of digital thermometer, we have ... ±0.1(±0.2) Test Range 32.0-42.9(90.0-109.9) Display Liquid Crystal Display (LCD),3 ... digits,15.3 x5.7mm Power Source One 1.5 V Button Battery model ... 55(-13-131);Relative Humidity:25%RH-85%RH digital thermometer