Temperature measuring range -40℃~80℃/-40℉~176℉ Accuracy ±0.5℃ (-20℃ ~ 40℃); ±1℃ (others) Resolution 0.1℃ Temperature sensor type NTC Probe length 5 meters (16.4 feet) Data uploading interval 1 min to 24 hours Data uploading mode WiFi (both 2.4GHz and 5GHz supported) Offline data record capacity 20,000 readings Report format PDF/XLS Alarm types LED indicator, buzzer, app notification, email alerts Communication port WiFi Power supply 5V/1A (DC) Standby battery 3.7V, 1100mAH rechargeable lithium battery Power cable length 1.5m