4G DTU (Data Transfer unit)  is a machine that use FDD-LTE or TD-LTE network to transmit local serial port data to far away place, exchange data with remote public network server, mainly used for remote data collection and remote control projects. You’ve to do hard homework before purchasing to select most suitable 4G D

Brand and quality

Brand is symbol of workmanship and quality, design and workmanship also demonstrate the strength of brand. You couldn’t rely on the product with welding placement and no design, failure rate can be imagined.

Some factories 4g DTU price is very cheap, but they just put package the communication module into 4G DTU, no encapsulation with underlying protocol so you’ve to use underlying AT commands, very inconvenient.

Function

Based on quality selection, next step is to see whether the function of 4G DTU can suitable for the project application environment or not. Some 4G DTU can transmit data only, some can send sms only, some can do both, or some couldn’t send sms even sms packet size couldn’t meet the requirements of projects.

In addition, some projects need not only transparent transmission function but also network access function, you can use 4G DTU with wan port to meet this requirement, this is a wireless transmission terminal device that has both DTU and router function.

Communication data volume

Devices with fast and large quantity communication data will definitely have advantages. 4G DTU has lower ping value compare with 2G/3G module, time from module sending data packet to receiving response from server is shorter, which is suitable for application that require high response speed, such as remote alarm.

Interface selection

Interface selection is to choose terminal form, such as full-duplex RS232 interface or half-duplex RS485 interface, corresponding interface is easy to access and relatively firm, avoid trouble of poor contact, of course more interfaces means more advantages.

Operator selection

Choose right operator which support 4G DTU according to project usage environment, you’ll lose money if you find the one you choose hasn’t signals and have to change to another operator.