Description: This wireless digital thermometer displays indoor & outdoor temperature clearly. With Wireless 433MHz transmission, you can know outdoor temperature with indoor receiver. A good helper for your daily life and keep you inform of indoor & outdoor temperature. Features: Can display the indoor and outdoor temperature. Clear LCD display, easy to read. Wireless transmission function, you can know outdoor temperature with indoor receiver. Indoor temperature range within 0~60℃; outdoor temperature range within -40~60℃. Very convenient to use, great for home or office use. Specifications: Condition: 100% Brand New Material: ABS Color: Black Display: LCD Indoor Temperature Measurement: 0~60℃ Outdoor Temperature Measurement: -40~60℃ Accuracy: (+/-)1℃ Wireless Transmission(in open air): 100 meters, 30 meters under most condition Frequency: 433MHz Update Rate: 60 seconds Transmitter Battery: 2 * 1.5V AAA Batteries(not included) Receiver Battery: 2 * 1.5V AAA Batteries(not included) Outdoor Transmitter Size: approx. 5*7*2cm / 1.97*2.76*0.79in Indoor Receiver Size: approx. 5.8*8.7*1.7cm / 2.28*3.43*0.67in Weight: approx. 90g Package Included: 1 x Indoor Receiver 1 x Outdoor Transmitter (battery not included) Note: 1. Please allow 0-2cm 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.