Introduction: This series is mainly targeted at international warehousing and logistics, including 4G and WiFi versions. It is widely used in small cold storage, refrigerator, refrigerated trucks and other logistics transportation, blood band refrigerators, and other scenes. Feature: 1.Beautiful appearance design, 2.4 inch TFT screen display 2.Built-in large capacity lithium battery, long running time 3.Built-in Bluetooth, Bluetooth print data anytime and anywhere 4.LBS(base station) +GPS accurate positioning, monitoring the movement track at any time 5.Equipped with magnet adsorption mounting bracket, easy installation and easy operation 6.GPRS\4G\wifi three transmission modes can be selected, transmission distance is not limited 7.Real-time monitoring, support SMS, Wechat, email, APP push four alarm methods 8.Remote temperature and humidity data monitoring record, data cloud storage, safe and reliable