4G full network compatibility, supporting China Mobile, China Unicom, and China TelecomMaximum upload rate of 5Mbps and maximum download rate of 10Mbps for LTE-FDDSupports local and remote upgrade of DTU programsCompatible with 3.3V and 5V levelsSupports multiple network protocols including TCP, UDP, MQTT, HTTP, and Alibaba CloudNetwork standard: 4G full network compatibility, supporting China Mobile, China Unicom and China TelecomCommunication rate: ↓(1)LTE-FDD:The maximum upload rate is 5Mbps and the maximum download rate is 10Mbps(2)LTE-TDD: Uplink and downlink configuration 1.The maximum upload rate is 4Mbps and the maximum download rate is 6Mbps(3)LTE-TDD:, uplink and downlink configuration 2.The maximum upload rate is 2Mbps and the maximum download rate is 8MbpsPower supply voltage: 5-12VPower protection :TVS protectionTIL interface1 UARTBaud rate: 1200- 460,800Data bit: 8Stop positions: 1, 2Parity bit: Odd, even, no parityLocal upgrade: Supports USB update of DTU programs and log viewingRemote upgrade: Supports remote update of DTU programsSerial port uplink cache: 4KNetwork downlink cache: 4KNumber of network channels: 8Color: As ShownMaterial: PCBPackage Contents:1*4G ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.