Product Features: Measure indoor and outdoor temperature and humidity, Celsius and Fahrenheit conversion The highest and lowest temperature and humidity memory function You can view historical temperature and humidity data Connect up to 3 outdoor units (conventional set with one outdoor unit) Two highly magnetic magnets on the back shell of the main unit can be attached to metal objects There is a bracket on the back of the host, which can stand in a horizontal position High-sensitivity touch button control, easy to operate Comfort indicator, temperature and humidity trend indicator HTN color LCD display, high-definition widescreen without angle With backlight, it will automatically turn off the backlight after 10 seconds without operation The outdoor unit can be hung with hanging holes, or it can be placed on a horizontal surface XP4 waterproof outdoor unit Product Parameters: Indoor temperature range: -4F-158F (-20C-70C) Outdoor temperature range: -40 F-158F (-40C-70C) Humidity range: 20%-95% Comfort display: dry, comfortable, humid Temperature display unit: C/F optional (default is C) Temperature resolution: 0.1C/F Humidity resolution: 1% Refresh rate: 10 seconds. Error: temperature plus or minus 1, humidity plus or minus 5% Wireless receiving range: 60 meters / 197 feet RF wireless frequency: 433MHz Power supply: AAA battery (battery not included in delivery) Packing data: Single product size: host: 114*24*96MM transmitter: 100*35*20MM Single product net weight: host: 142g transmitter: 40g One for One package details: Single set of product packaging size: 155*33*135MM Single set package weight: 232g Packing list: host*1, transmitter*1, pearl cotton bag*2, English manual*1, explosion-proof screw set*1, conventional cowhide box*1 Please allow slight deviation in the measurement data and Please make sure you don't mind before ordering. High quality store for you! Shop tips: 1. The size is measured manually, please allow the error (1-3 cm). 2. Due to the different pixels of the monitor, there may be some color difference, please refer to the actual product.