Indoor Outdoor Thermometer Humidity Monitor, Wireless Digital Hygrometer Humidity Temperature Sensor Large Touchscreen Backlight, Humidity Gauge Meter Cold Resistant Weatherproof

OverviewThis indoor outdoor thermometer is a perfect weather station, allows you to know the precise temperature and humidty around your home. Great for study, public place, office, etc. Instrution：Select Channel and SYNCPress CH/SYNC once to display the temperature and humidity readings from up to 3 outdoor remote sensors.Press and hold CH/SYNC for 3 seconds to re-synchronize or re-pair the unit. It may take a few minutes for synchronization to complete.To check all time/24 HRs history data and Using the Max/Min recordsPress and hold ºC/ºF/History button for 3 seconds to check the temperature/humidity in the past (all time) or last 24 hoursMax/Min records reflect the minimum and maximum temperature recorded since the unit was powered on, since the batteries were changed or since it was manually reset (whichever was most recent).To view the MAX/MIN record, press the MAX/MIN/CLEAR once, the MAX icon and MIN icon appears on the display.To reset the MAX/MIN records, press and hold the MAX/MIN/CLEAR for 3 second. Dashes will display to confirm all values have been cleared.Specification:1.Total 4 functional buttons: Backlight, CH/SYNC,ºC/ºF/history, Max/Min/Clear.2.Indoor temperature range: -4ºF--158ºF(-20ºC--70ºC).3.Outdoor temperature range: -40ºF--158ºF(-40ºC--70ºC).4.Temperature resolution: 0.1ºC/ºF.5.Humidity range: 20%-95%; Humidity resolution: 1%6.Temperature display unit: ºC/ºF selectable (the default is ºC).7.Wireless range: 197ft/60m depending on home construction materials.8.Wireless Frequency: 433 MHz.9.Power: Display: 2 x AAA 1.5V batteries; Sensor:2 x AAA 1.5V batteries. (batteries not include)Remarks:The outdoor sensor start reading the exact value and transmitting the signal after 30 minutes. Package Included: 1 x Thermometer Humidity Monitor 1x Outdoor Sensor1 x Instruction manual  Special Feature: High Accuracy 【MAX & MIN Records】All time/24 hours MAX & MIN indoor/outdoor temperature and humidity percentages recorded and displayed on humidity gauge; Temperature/Humidity trend arrows indicate whether it’s getting warmer or colder or more humid near the remote sensor. 【Accurate Reading & 197ft/60m Remote Range】Indoor Outdoor Thermometer provides accurate humidity and temperature readings for both inside and outside simultaneously. Indoor/outdoor thermometer wireless with 200ft/60m remote range, capable of strong signal penetration (enhanced 433 MHz), sync up to 3 outdoor remote sensors to monitor different locations.