| Quantity(Sets) | 1 - 100 | >100 |
| Est. Time(days) | 7 | To be negotiated |
High cost performance and multifunction 4G DTU
Terminal connection structure design,more convenient for industry applications,support script programing,also can automatically collect data from instrument and bidirectional transparent transmission.Hardware Description
Using ZTE communication chips, support 7 pattern 15 frequency brands 4G network, in case of 4G network instability, it can automatically switch to the 2/3G network to ensure that the equipment is constantly connected, and automatically switch to the 4G network when the 4G network is restored.Device parameters
| Specification | Description |
| VIN power supply interface | Voltage range:5V~30V DC |
| BAT power supply interface | Voltage range:3.5V ~4.2V DC |
| Power consumption | @12VDC power; |
| Send and receive data current:150mA~240mA; | |
| Idle status current:<40mA | |
| Frequency brand | GSM B3/8; CDMA1X CDMA EVDO; WCDMAB1; |
| TD-SCDMA B34/39; LTE FDD B1/3; | |
| LTE TDD B38/39/40/41; | |
| (U)SIM card interface | Support SIM card 3V/1.8V |
| Antenna interface | 50Ω SMA interface |
| Serial port interface | RS232/RS485/TTL; baud rate:300~115200bps |
| Data bit:7/8 parity check: N/E/O ; | |
| Stop bit :1/2 bit | |
| Temperature range | Working temperature :-25℃~70℃ |
| Storage temperature:-40℃~85℃ | |
| Humidity range | Relative humidity:95%(No condensation) |
| Physical characteristic | Long:10.5CM wide:6cm high:2.2cm, |
| weight:190g |
Main Function Description
Support multiple protocol
TCP-ZSD / UDP-ZSD
Base on Mind packing TCP/UDP pattern. The SKD package provide by us support multiple programming language development environment, user can easily visit data center without care about the complex network protocol . support static IP,dynamic domain,APN private network.HTTP protocol
The HTTP protocol can be used as an HTTP client for data transmission and bidirectional communication with the HTTP server to simplify the development difficulty. Using THE HTTP protocol, when the serial port has data to be sent, it establishes a connection with the server and submits the DTU ID and collected data packet to each HTTP server through HTTP post or HTTP get. In this way, the data collected by DTU can be directly displayed on the WEB side.Virtual Serial Port Function
Using virtual serial port technology, it is possible to establish a high-speed 4G wireless connection between a serial port device and a host computer in the data center through DTU and make a virtual wired connection, which is compatible with the original serial port program of the user device.Local/Remote Upgrade
support remote configuration parameters and upgrade firmware at monitor center,the device will work as usual when upgrading remotely. Script programming overturns the traditional DTU, which only has the function of data transmission, and turns MDD3411 into a DTU device with acquisition function.Mind DTU local acquisition script instruction user manual
different from the DTU before, MDD3411 support script automatic acquisition function. Using script instruction, users can define the data acquisition flexibly, greatly reduces hardware costs.Defining the local acquisition action flexible
The custom script can realize the automatic acquisition of external sensor and instrument data by DTU without the need for the user to add controller separately.DTU timing automatic acquisition can be realized through the script instruction to configure DTU, which greatly reduces the acquisition hardware cost.The script realizes the basic functions of switch control, delay control, instruction issuing, circulation control, reporting control, inserting custom message header, and whether to accept the change of baud rate of instrument response, etc., which can meet the acquisition requirements of most instruments.MDD3411 adopts advanced patch technology
With port overcurrent, overvoltage, anti-reverse connection and anti-surge protection, industrial-grade quality, stable operation at -40~85℃;If the wire connection is unexpectedly reversed and the port is short-circuited, the device will not be damaged, and it can be used normally after reconnecting.