Erin Digital Hygrometer Indoor Humidity Meter and Temperature Monitor Thermometer Accurate Readings with Large LCD Digital Display and Alarm Clock JH-5 Displays indoor temperatures and humidity percentages and time Large digital display with alarm clock easy reading and without needing to be connected to the internet Max/Min temperature and humidity memory ,Strong signal penetration Continuous sample rate for accurate readings Easy installation,Desktop or wall hanging , Packing with AAA Battery