1. Display: Three channels and indoor temperature and humidity can be displayed at the same time, and level III indoor environment comfort can be displayed.2. Detection range: Indoor temperature, test range 0 - 50 , outdoor temperature, test range - 50 - 70 ; Indoor and outdoor humidity, detection range: 20% - 99%. Indication of indoor and outdoor temperature and humidity change trend.3. Recording function: Record indoor and outdoor temperature, maximum/minimum humidity.4. Functions: Alarm function for exceeding the upper and lower limits of indoor temperature and humidity, temperature and humidity calibration function, time and date display.5. Easy to use: It can be hung and stood, accurate and reliable.Style: Standing and Wall HangingDisplay Type: DIGITALModel Number: Thermometer HygrometerUsage: Household: Thermometer HygrometerPower supply mode: 3 X AAA battery or DC 5V power supplyColour:WhiteMaterial:plasticPackage Contents:1 x Digital Thermometer(No Battery)3 x Sub Machines1 x USB CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.