... .Date. NO.218A clock~ thermometer ~ Hygrometer Manual*with 1.5-meter temperature and humidity sensing line.*Measure tolerance: temperature 0°C ... display range: January 1, 2000 ~ December 31, 2049; Time display 12/24 hour clock.2: Switch Date / Time / weeks / sec display ... the corresponding bit will be blinking, set the following order: 12/24 hours, seconds, hours, minutes, year, month, day, 2: UP ...