1.Motion activated backlight function2.Large indoor/outdoor temperature &humidity display with trend3.Indoor temperature range : 14F~122F(-10C~+50C)4.Outdoor temperature range : -40F~140F(-40C~+60C5.Humidity range : 1%RH-99%RH6.Up to 3 RF channels for outdoor sensors (only one sensor included)7.Max/Min temperature & humidity records within 24 hours(in and out)8.Comfort level indication9.C/F switchable10.Wall hanging, table standing or magnet attaching11.Low battery indicator12.White backlight for 8 secondsColour:WhiteMaterial:plasticPackage Contents:1x Digital Hygro-thermometer1x Remote SensorOnly 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.