TS-6211 Digital Thermometer Hygrometer Based on original design intention of Simple and Practical, TS-6211 come out. As a Multifunctional thermometer hygrometer, it have equipped with large LCD display, different color backlight, clock, calendar, alarm clock, temperature/humidity range alert and max/min record. Alarm Clock Function Date, clock have been shown on the top. And TS-6211 can be used as alarm clock to wake you up from sleep. 2 alarm clock can be set at a time and clock 1 will ring 2 minutes and If you are worried that one alarm clock will not wake up, you can set a second alarm clock, and the second alarm clock will ring for 5 minutes. Temperature/Humidity Range Setting If want to monitor the temperature or humidity, setting a temperature/humidity range. When the temperature/humidity out of the setting range, the device will beep and the backlight color will change to red or orange. Comfort Indicator The comfort level display is based on the humidity range: Humidity70%: Wet If the temperature is outside 15.6-26.7, but the humidity is within the range of 50-70%, it will not be displayed. 2 Way Of Power Supply TS-6211 can use 3pcs AAA battery as power supply and if want the backlight alway on, please use DC charging cable to supply the power. Specification Temperature Range: 0~70 Humidity Range20%~99% Product Size: 12.5cm x 12.5cm x 2cm Calibration Function: Available Package Content 1 x Thermometer 1 x cable 1 x Manual Batteries are not included