ThermoPro TP68C TP68C, 150M wireless thermometer & hygrometer, is designed in big LCD Display and equipped with a professional grade remote sensors to monitor outdoor temperature and humidity. Weather Forecast function can forecast weather in next 12~24 hours. 150 Meters Wireless Range TP68C wireless range up to 150M, which mean the receiver can receive the temperature and humidity of transmitter within 150 meters. Sync Up To 3 Outdoor Remote The receiver can connect with 3 remote sensor, 4 different place's temperature and humidity can be monitored at the same time. (additional 2 sensors sold separately) Specification Indoor Temperature range: -4 F ~ 158 F (-20 C ~ 70 C), humidity range:10% ~ 99%. Outdoor Temperature range: -31 F ~ 158 F (-35 C ~ 70 C) Temperature tolerance: 0.5 F(0.3 C) Humidity tolerance: 2% Three humidity levels: dry when less than40%, good when 40%-70%, humid when more than 70%. Press C/F button to select temperature display unit in C or F. Press MAX/MIN button once to show the maximum and minimum temperature. Rechargeable Remote & DC Power Supply TP68C remote is rechargeable, no need to change the battery. For receiver, it have two kind of power supplyAAA battery and DC charging. Using battery, it need 3pcs AAA battery. And in order to save battery power, the screen will light up for 15 second and then it will not light up, if you need to check the date, please press the LIGHT button to have it bright. DC Power supply (directly using electricity), no need the battery, can have the screen bright all the time. Weather Forecast The initial current weather condition should be set before the weather station can better forecast weather in next 12~24 hours. The weather station process and analyze the weather patterns including temperature and barometric pressure change for the past 24 hours in order to determine the forecast, only then the predicted weather forecast will reflect the actual weather for your immediate area. And the weather forecasting is approximately 70% accurate. The accuracy rate might be lower in extreme weather conditions. Press HISTORY button on the back of the base station to show the actual barometric pressure value in the past 1 to 12 hours. Press WEATHER button to select one of five weather conditions (sunny, partially cloudy, cloudy, rainy, snow) that can best reflect the current weather condition. Press inHg/mb button to select barometric pressure display unit in inHg or mb(hPa). 3 Adjustable Brightness Levels & Big LCD Display TP68C have been disigned in Large display (9.9 x 17.7 CM), all the date can be shown clearly. And 3 adjustable brightness levels for choices. Package content 1 * Base Station Unit (receiver) 1 * One Outdoor Remote Sensor (transmitter) 1 * Usb Charger 2 * Usb Charging Cable 1 * Manua