EX9520 is an industrial-grade RS232 to RS485 converter with an extended temperature range from -25°C to +75°C and isolation of 3000VDC on RS232
EX9520A is an industrial-grade RS232 to RS422 / RS485 converter with an extended temperature range from -25°C to +75°C and isolation of 3000VDC on RS232
EX9530 USB to RS485 is an industrial converter for serial devices via USB. It supports handshake on the RS232 interface
EX9520R is an industrial-grade RS232 to RS485 converter with an extended temperature range from -25°C to +75°C and isolation of 3000VDC on RS485
ExpertDAQ, manufactured by : TOPSCCC Technology Co., Ltd. - Taiwan