Features Battery Powered: The thermohygrometer is powered by batteries, making it easy to use and install in any location. The battery powered design also ensures a long lifespan and low maintenance. Highly Accurate Readings: This thermohygrometer with compact LCD displays large numbers of indoor and outdoor temperatures with an accuracy of + or ‑2°F, Fahrenheit and Celsius degrees available. Versatile Use: The thermohygrometer is suitable for a wide range of applications, including use in homes, offices, factories, warehouses, and outdoor locations. The device can be used to monitor temperature and humidity levels in a variety of settings an 2 Placement Options: The thermohygrometer has 2 placement options that allow you to place it anywhere, such as a durable tabletop stand, or a hanging stand for hooks. Free Temperature Measurement: This thermohygrometer can freely monitor the temperature in different locations such as rooms, patios, cellars, greenhouses, gardens, etc. Specification: Item Type: Wireless Thermometer Hygrometer Material: ABS Model: ZW1268 Material: ABS Power Supply: Receiver: 2 x dry cell AAA (not included) Display: 2 x AAA dry cell batteries (not included) Function: Display: 4.0inch LCD display Indoor Temperature: -10°C to +50°C Outdoor Temperature : -40°C to +60°C Indoor Humidity : 20% to 99% Weather forecast for the next 24 hours, time, calendar, alarm clock function, 12, 24 hours switchable Frequency: 433MHZ Package List: 1 x Monitor 1 x Receiver 2 x Screw 2 x Expansion Screw 1 x Instruction Manual Package List 1 x Monitor 1 x Receiver 2 x Screw 2 x Expansion Screw 1 x Instruction Manual