The figure below shows the outline of the TK500 telegraph. The TK500 is a detachable structure that can be used both for home and office use.
The following figure is an electrical schematic diagram. Its hardware part adds a sophisticated temperature sensor and A/D conversion circuit, so it has temperature measurement and temperature reporting. K1 (MODE) is the function mode button, K2 (SET) is the setting conversion button, and K3 (ADV) is the adjustment button. In the time display status F, press K3 to switch the Fahrenheit or Celsius temperature setting. K4 (LANG) is a Chinese/English and 12/24 hour setting button. K5 (TALK) is the random time report temperature key. Press K5 to report the month, day, week, hour, minute, second and current ambient temperature.
The main functions of the TK500 type timepiece are: 1. The clock function displays the year, month, day, week, hour, minute, and second. The year is from 1700 to 2399. 2. Measure and display the ambient temperature at that time. The measured temperature range is 9.9 °C to 62 °C, and 14.2 °F to 140 °F. The temperature and time are simultaneously displayed on a 55 x 30 mm square large liquid crystal display. 3. The whole point and random time reporting temperature function. 4. It has the function of setting the hourly alarm temperature at the same time. 5. You can choose Mandarin or English to report the time.
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