Battery: AAA 1.5V 1 piece
   HTC-1 Temperature and Humidity Meter User Manual
Product Specifications:
    

   Temperature measurement range: -50℃ to 70℃
Temperature measurement accuracy: approximately ±1.0°C (±1.8°F)
   Temperature resolution: 0.1°C (0.2°F)
Humidity measurement range: 10%RH~90%RH.
Humidity measurement accuracy: ±5% (30%-70%) ±7% (other)

This needs to be explained. That is to say, in a room that is quite dry, with almost no humidity, the error is also

It will get bigger, humidity is not as precise as temperature, which can be measured to within about ±1 degree, even in a laboratory. This is a treasure.

 For home humidity measurement, it is certainly much more accurate than the kind that comes with a humidifier! If you're interested in more precise humidity readings, consider investing in a professional humidity meter.

 There are special high requirements! Please tell me, there are more precise hygrometers, the price is about 200 yuan! This is just for home.

With it, we can tell if the room needs humidification or dehumidification, serving as the guardian of your healthy living space, it is

 Very competent!

Basic functions:
Temperature/Humidity Display
Celsius/Fahrenheit temperature switch display
Temperature and Humidity Memory Function
12/24-hour clock
Chime Time Function
Daily Alarm Function
Calendar display function

   Operation Method：

    1. Push the battery door in the indicated direction of the machine back, remove the battery spacer, and then replace the battery door. The machine is ready to use.

   2. Button Function: (MODE) Switch between clock and alarm display modes / Set the current time, alarm, 12-hour or 24-hour format.

      Adjust the value of the set project by the hour system and date (ADJ); (MEMORY) displays the highest in memory.

      Lowest Temperature and Humidity Value / Clear Memory Highest/Lowest Temperature and Humidity Value; (℃/ oF) Switch Temperature Units to ℃

     Celsius (°C) or oF (°F) display; (RESET) clear all settings/memory values, return to the initial

      Status.

   3. Press (MODE) for 1 second at the initial state, the minute number of the current time starts to flash, and pressing (ADJ) can

      To adjust the minutes, press (MODE) continuously to set the time, '12/24', and 'Month'.

      "（M）" 翻译为 "Month"，"日（D）" 翻译为 "Day"。

   4. In the current clock mode, the two o'clock position on the clock and minute hands flash once per second, switch to the alarm display.

      The clock mode (where the two o'clock position on the clock and minute hands do not flash), at this time, pressing (ADJ) can switch to the "alarm" function.

     Alarm" function / "Chime at the top of the hour" function on/off, then hold down "MODE" for 2 seconds to set

      Set the alarm time and simultaneously activate the "Whole Hour Extreme" function, and the ( ) symbol appears.

   5. In the alarm mode, if no operation is performed, the current time will automatically return after one minute. At this time, press once.

     Switch to calendar display, after 3 seconds, automatically return to the current clock display by pressing the MAX/MIN button, display temperature/humidity

      The maximum value since the last CLEAR.

   6. Pressing (MEMORY) will display the maximum (MAX) and minimum (MIN) temperature/humidity values of the memory. Hold down the

     The maximum/minimum value for memory clearance beyond 2 seconds.

    Notes:

    1. Please press the (RESET) button once when you first use or replace the battery (located at the back of the machine).

      2. If the machine experiences any problems, press the (RESET) once.