... Users / up to 100,000 Event Buffers Network Communication via TCP/IP English Software supportable database: Access and ... Controllers RS232: Communication Distance less than 13m, suggestion distance is 3m or less RS485: bus line max length 1200m ... on net coverage area Collocations PCB board, case, power, power line, serial port communication line, software, manual, certificate, key(2pcs), carton Alarm ...