Features: With LCD Digital Wireless Thermo meter High quality for durable and long-lasting use Lightweight for portable carry Show the indoor and outdoor temperature Wireless transmission function allows you to know the outside temperature with internal receiver Very convenient, a great item for your home or office Specifications: for Shell Material: ABS Color: Black Indoor Temperature Range: 0~60C Outdoor Temperature Range: -40~60C Accuracy: 1C Wireless transmission (outdoor): 100 meters, 30 meters under most condition Frequency: 433 MHz. Refresh Rate: 60 seconds Transmitter Battery: 2 x 1.5V AAA batteries (not included) Receiver Battery: 2 x 1.5V AAA batteries (not included) Transmitter Size: 6.6x5x2cm/2.6x1.97x0.8in Receiver Size: 8x5.5x1.7cm/3.15x2.16x0.67in Quantity: 1 Set Note: Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thank you! Package Contents: 1 x Thermo meter 1 x Base Station 1 x User Manual