1. 3 line lf LCD display 2. Show the outdoor temperature/humidity and indoor temperature/humidity at the same time. 3. Recording the highest or lowest temperature/humidity value every day. 4. The instrument has one string to deduct location behind onea??s back to prop up the board, can hang on the wall or put on the desk 5. Max outdoor temperature sensing distance:1.5M 6. Humidity survey range:25%RH to 98%RH
