DS3231SN 3 in 1 LED Digital Clock

Link at end to videos where I used one of these. The latest three-in-one electronic clock module, set time, thermometer, voltmeter three practical functions in one, using the built-in temperature compensation crystal DS3231 clock chip / Epson RX8025T clock chip, with ultra-high timing accuracy and stability , Extended the temperature probe, an effective solution to the problem that the temperature of the module temperature is not enough. Ultra wide supply voltage, support 5 ~ 30V DC. Product parameters: 1, the supply voltage: DC5.0 ~ 30V 2, the temperature function range: -40 ~ 120 degrees, resolution 0.1 degrees. 3, the voltmeter function range: DC5 ~ 30V (need pure DC power supply, not recommended 24V battery use, because the voltage may be charged too high, burned) 4, the module size: 40x13mm ultra-small Function and instructions: First, adjust the time, date, year, voltage error, temperature error cycle display item definition, alternate display interval In the non-set state, press the left button, enter the time adjustment (note the middle of the colon is bright), 1. At this time, "minutes" start flashing, press the right button to increase, adjust the range 00 ~ 59. After adjusting the "points" 2. Press the left button again, then "hour" starts flashing, press the right button to increase, adjust the range of 00 ~ 23. 3. Adjust the "hour", then press the left button to enter the date of adjustment (note the middle of the colon is off), then "day" began to flash...