Wind direction accuracy: 360 degrees Sampling time: 60 seconds Wi-Fi standard: 802.11 b/g Wireless frequency: 2.4 GHz Wi-Fi transmission distance: 20 meters 1. Outdoor temperature range: -40℃ to +60℃/℉ 2. Indoor temperature range: 0℃ to +60℃/℉ 3. Temperature accuracy: ±1℃ 4. Humidity range and accuracy: 10% to 99% (1% resolution); accuracy: ±5% 5. Barometric pressure range and accuracy: 300 to 1100 6. Rainfall display: 0 to 9999 mm 7. Rainfall accuracy: 0 mm to 9999 mm 8. Wind speed range and accuracy: 0 to 50 m/s Specification: Power supply: (Batteries not included) Receiver: 3 x AA alkaline batteries or 5.9V/500mA power adapter Transmitter: 3 x AA alkaline batteries Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Plug Type:US Plug,it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Voltage:AC100-240V Color:As Shown Material:ABS Package Contents: 1 * Weather station (indoor unit) 1 * Outdoor sensor (outdoor unit) 1 * Power adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.