Thermometer Indoor Outdoor Digital LCD Hygrometer Temperature Humidity Meter New Product Feature: Real Time Temperature and Humidity Display: High accuracy and fast refresh. Providing accurate humidity and temperature readings for both inside and outside every 10 seconds. Clear LCD Display and 3-Level Air Comfort Indicator: Easy to read with 3in large LCD display. With humidity level icon indicates DRY/COMFORT/WET air condition quickly with just a glance. All Time/24 Hours Records: Max & Min humidity and temperature memory function. Can view historical temperature and humidity data. °C/°F Optional and Magnetic: Fahrenheit degree and Celsius degree can switch conveniently. Two high-magnetic magnets on the back shell of the display unit, can be attached to metal objects. Limit Alarm Setting and Battery Indicator: Indoor temperature, humidity upper and lower values exceed limit alarm function. Low battery reminder function. Product Specification: Material: ABS Color: Black/White  Size: 8.5*2*9cm/3.4*0.8*3.5in Temperature Range: 0˚C~70˚C(32˚F~158˚F) Humidity Range: 20%~99% Accuracy: Temp ± 1˚C, humidity ± 3%  Update Rate: 10 seconds Battery: 2*AAA(Not included) Humidity Indicator: The comfort level icon in the center of the screen clearly indicates the home environment based on the relative humidity (RH). Dry (Orange): RH<40% Comfort (Green): Temp 20˚C~25.9˚C(68˚F~78.6˚F); RH 40%~70% Wet (Blue): RH>70% 2 Mounting Mode: Tabletop Stand and  Magnetic Back Package Included: 1 x Temperature and Humidity Meter 1 x User manual