Protocol Converters / Gateways consist of a CPU card and a SMPS. San Telequip Pvt. Ltd. Manufactures Protocol Converters / Gateways. San Telequip Pvt. Ltd. Offers a wide range of Interface Converters. Protocol Converters / Gateways come with 0 - 55° C. Temperature. CPU card that is generally used in the protocol converter / Gateway [GW] hardware, supports three serial communication ports viz. COM1, COM2 and COM3, 32k SRAM, 8K of serial EEPROM, Watchdog timer and 32k memory mapped for general purpose Input /Output ports. The enclosure or housing of the Protocol Converter / Gateway can be customised as per customer needs.