Digital thermometer, with wireless sensors, is suitable for outdoor or indoor use, such as living room, bedroom, baby room, office, wine cellar, greenhouse, basement, etc.-- Track three temperatures (one by thermometer, two by sensors), grasp the environment changes in real time. Features: THREE TEMPERATURE MONITORING: Thermometer, made of durable solid ABS housing, includes 2 sensors (signal distance: 100m / 328ft), can simultaneously monitor the temperature of 3 places. HIGH ACCURACY: Digital thermometer built-in smart sensor, has wide temperature measurement range, precise control, 10s refresh speed, providing the latest environmental changes. LARGE LCD DISPLAY: Large screen displays the actual temperature data values in a large font, easy to read, battery status, the icon of Temperature trend, maximum / minimum temperature. MAX / MIN ALARM RECORDING: It has max min temperature value memory, audible alarm icon at the temperature on the setup value, or ??F switchable with the press of the button. EASY INSTALLATION: Sensor equips with back clip to allow easy installation; Temperature measuring device, with hanging hole, magnetic bracket design, allows for trouble-free wall mounting, refrigerator fixing, placing on the table. Specifications: Material: Plastic + Electronic Components Color: White Type: 1/2 Sensor Thermometer (Optional) Indoor Temperature Range: 0~ 50(32~ 122) Outdoor Temperature Range: -40~ 60(-40~ 140) Accuracy: 1.0 Indoor Temperature Refresh Time: 10s Outdoor Temperature Refresh Time: 60 Sensor Power Supply: 2 * AA Batteries (Not Included) Thermometer Power Supply: 2 * AAA Batteries (Not Included) Coverage Range: Up to 100 Meters Sensor Dimension: 38 * 33 * 106mm / 1.49 * 1.29 * 4.17in Thermometer Dimension: 95 * 20 * 85mm / 3.74 * 0.78 * 3.34in Net Weight: 178g / 6.27oz Package Size: 95 * 63 * 115mm / 3.74 * 2.48 * 4.52in Package Weight: 220g / 7.76oz Note: Thermometer set, other accessories in the pictures are not included. Due to manual measurement, there may be some deviation, please prevail in kind. Due to lighting or other reasons, the object in the picture and the material may differ slightly. Packing List: 1 * Thermometer 2 * Sensor 1 * User Manual