Highly Accurate Swiss-made Sensirion sensor: Indoor thermometer is accurate to ±0.5F and best in class humidity accuracy of ±2%RH. Making the temperature sensor so sensitive that it will record even the slightest changes in your home 260ft Remote Thermometer: Smart thermometer utilizes an advanced 5.0 Bluetooth chip to produce a reliable long range of 260ft/80m, allowing you to obtain real-time temperature and humidity readings from the digital temperature gauge from anywhere in your home Temperature and Humidity Meter Graph and 1 Year Data Storage: Our easy to use APP contains a dynamic temperature and humidity graph to better identify trends down to a specific hour or even up to a 1 year time period Instant APP Alerts: When the temp or humidity exceeds your presets, or you move out of range of the room thermometer for home, the APP will immediately push an alert to your smartphone, so you can react quickly. Perfect for the greenhouse, hatching room, cellar, bed room, bathroom Large Backlit LCD Screen: Bluetooth Thermometer Hygrometer features a 3.5 inch backlit LCD display to allow you to stay informed in real-time about your temperature and humidity gauge at a glance in any light conditions. House thermometer indoor uses a soft yellow backlight to avoid eye strain ThermoPro Bluetooth Hygrometer Thermometer, 260FT Wireless Remote Temperature and Humidity Monitor, with Large Backlit LCD, Indoor Room Thermometer and Humidity Gauge, Max Min Records