-Power 5-35V DC, protect over volt, over curent. Can supply power through gate micro USB, jack DC-IN or terminal 5.08mm.
-RS485 baudrate upto 512000, distance 1200m, 32 ID on bus, auto DE-RE
protect over volt by diode TVS, protect over current by fuse 100mA.
-Lora use module RA02, 433MHz, distance 200m in city, 2200m in case face to face, 3 floor in building.
-Can extern GSM/GPRS with sim800L.
-Can mount dinrail.
-Upload code auto, use CP2102.
-Have 7 IO free, can use them for another module extern.