Renu Electronics Pvt. Ltd. Manufactures Panel Mounted Compact Single Channel HART Gateway Pass Device. Renu Electronics Pvt. Ltd is an ISO9001:2000 certified company by TÜV. Panel Mounted Compact Single Channel HART Gateway Pass Device is available with PLC1 serial port in any combination of RS232 / RS422 / 2 or 4 wire RS485 / CMOS. It connects HART device to PLC / SCADA or any serial device. In addition allows configuration software to connect HART device.