Product Description:Model:WSD-2
 Type: Digital Thermometer And Hygrometer

 Functions:One-channel for temperature measuring .one-channde for humidity measuring.Big screen LCD display.Max. and Min. temp.memory and reset functions.switch between C and F,clock and alarm clock functions.Suitable for locales such as refrigerator storage ,household,office and so on.
Technical parameters:
 Measuring range:
    Temperature:
 In side temperature:-30C~+50C(-22F~+122F)
               Out temperature:-50C~+70C(-58 F~+158F)
               Humidity:20%~99%
 Resolution :temperature:0.1C humidity 1%
 Accuracy : temperature: ý1C humidity ý5%
 Power :DC1.5v 7# alkaline battery(optional).
 Product size :110ý59ý20(MM)
 Screen size :60.5ý40(MM)