Power Supply: 2×3500mAh ER18505M Li-SOCl2 Batteries Support Obtaining the Current Device Location Based On The Base Station Signal Support Compartment/Cargo Box Opening Detection to Avoid Theft Supports Tilt Detection. Abnormal Tilt will Trigger An Alarm Support Set to Flight Mode, Meet Aviation Safety Requirements. Support OTA Remote Upgrade Operation IP67 Rated Temperature: Operating Principle: Digital CMOSens® technology (MEMS) Range: -40°C to +125°C Accuracy: ± 0.3? (-40? to 0?) ± 0.2°C (0? to 65?) ± 0.5? (65? to 125?) Humidity: Operating Principle: Digital CMOSens® technology (MEMS) Range: 0% ~ 100% RH Accuracy: ± 2% (0% ~ 50% RH) ± 1.8% (50% ~ 100% RH)