-ใช้วัดอุณหภูมิและความชื้น -มีถ่านแถม Parameters: Parameters: 1. Length & width & height: about 4.7 * 2.7 * 1.3cm / 1.88 * 1.06 * 0.51in 2. Update data every 5 seconds 3. Humidity measurement range: 10% RH-99% RH 4. Temperature measurement range: -50 ℃ -70 ℃ 5. Battery: 2 1.5V LR44 button batteries 6. Temperature measurement accuracy: ± 1 ℃ 7. Humidity test accuracy: ± 5%