With basic perpetual calendar, clock function, time is 12 hours or 24 hours.Fully functional touch keysThe product has function weather forecaster that predicts climate change for the next 12 hours2 alarm clocks can be set. At the same time, the drowsiness function can be set (off or 5~60min)Adaptive backlightHumidity: indoor and outdoor measuring range: 20% RH ~ 95% RHTemperature:- Indoor temperature measurement range: - 9.9C (15F) to 50C (122F)- Outdoor temperature measurement range: - 40C (- 40F) to 70C (158F)- temperature can be switched to C or F- outdoor thermometer alarm< /p> min max 24-hour air temperature and humidity recordoutdoor temperature high temperature, low temperature warning and frost warning wireless outdoor sensor:- can be mounted on a wall or placed on a table- 433.92 MHz RF emission frequency- 60 meters transmission range in open area- up to 3 wireless outdoor sensors can be connected. (product supplied with only 1 wireless outdoor sensor)