This document describes the specifications of a Thermo-Hygrometer Meter 230A product. It has time and alarm clock functions and can measure temperature from -20 to 70 degrees Celsius or -4 to 158 degrees Fahrenheit with an accuracy of ±1 degree Celsius. It also measures humidity from 20% to 90% with an accuracy of ±5% between 40-80% humidity. Additional features include displaying maximum and minimum temperature and humidity readings, 12/24 hour clock, and an error message if the sensor is not working properly.