... configured by user. Flexible equipped with RS485, RS232 and USB, realizing remote monitor; or communicated with PC. WithGPRS-DTU or ... Ethernet-DTU for remote communication instead of RS485, RS232, or USB port. Optional ultra low temperature function, ... configured by user. Flexible equipped with RS485, RS232 and USB, realizing remote monitor; or communicated with PC. WithGPRS-DTU or ...