Feature: 1. Digital thermometer, using wireless technology, can use receiver to receive measured temperature. 2. With a portable transmitter, it can sense outdoor temperature and transmit without obstacles within 100m. 3. Indoor temperature range is 0℃‑50℃ (32℉‑122℉), and the outdoor temperature range is ‑20℃‑70℃ (‑4‑158℉). 4. With clock function, support 12H / 24H time format, suitable for indoor and outdoor use. 5. ℃/℉ temperature unit for selection, supports one‑key reading of the maximum and minimum temperature. Specification: Condition: Brand New Item Type: Thermometer Material: ABS Indoor Temperature Range: 0℃-50℃ (32℉-122℉) Outdoor Temperature Range: -20℃-70℃ (-4-158℉) Wireless Distance: 100m / 328.1ft (No obstacles and no distance) Temperature Accuracy: ±1 Indoor Temperature Detection Cycle: 30 Seconds Outdoor Temperature Detection Cycle: 57 Seconds Time Display: 12/24 Hour System Indoor Receiver Working Power: 2 x 1.5V AAA Dry Battery (Battery Not Included) Outdoor Transmitter Working Power: 2 x 1.5V AA Dry Battery (Battery Not Included) Weight: Approx. 210g / 7.4oz Indoor Receiver Size: Approx. 149.8x85.8x21mm / 5.9x3.4x0.8in Outdoor Transmitter Size: Approx. 130x40x20mm / 5.1x1.6x0.8in. Package List: 1 x Indoor Receiver (Battery Not Included)1 x Outdoor Transmitter (Battery Not Included)1 x Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.