2G/3G Real-time Temp & RH Monitor ——TT11-3G 24/7 GPS Location & Temp & RH Management Access Information w/o Opening the Door High Precise Temp & RH Sensor Low Battery Level Notification Features: * Real-time GPS location, temperature and humidity management * Three buttons for quick operation * High precise and built-in temperature and humidity sensor * Easily USB and SMS configuration * Temperature and humidity alarm notification * Low battery level notification * LED lights indicating for different status * Access information without opening the door Specifications : Dimension Inner Lithium Battery Built-in 3.7V/4500mAh lithium battery (rechargeable ) Operating Temperature Range Operating Humidity Range Temperature Detection Accuracy Humidity Detection Accuracy Flash Memory Can store 8000pcs data Active mode (avg.) < 180mA Power Consumption Sleep mode (2G/3G module off) (avg.) < 0.1mA Sleep mode (2G/3G module on) (avg.) < 3.5mA Transmit Interval Temperature & Humidity Alarm Button Function Turn on / Turn off / Query device status