Gearmo RS-232 to RS-485 Converter with Isolation 2,500Vrms

GM-10017-B is a port-powered converter with optoelectronic isolation. It complies with RS-232C and RS-485 standards; it converts RS-232 signal to a balanced differential RS-422 or RS-485 signal. The built-in optoelectronic isolator can withstand up to 2,500Vrm isolated voltage; the fast instant voltage restraint is designed to protect the RS-485 interface; it adopts advanced TVS (TRANSIENT VOLTAGE SUPPRESSOR) instant voltage restraint; normally, TVS tube is in high impedance state; but when both sides of TVS tube suffer from high power voltage spikes, the voltage restraint will quickly lower the impedance from both sides, and absorb the large current; with this, the voltage on both sides are at a fixed value, which protects the component of circuit damage. This voltage restraint provides 600W on each wire with lightning and ESD protection, surge, and instant overvoltage protection on circuit; the tiny interelectrode capacitance ensures high-speed transmission for RS-485 ports. RS-232 port connects with RS-232C standard port by DB9 female connector; RS-485 adopts DB9 male connector as output. This converter has built-in zero delay auto receiving and transmitting conversion with unique auto I/O circuit control data flow direction without any handshake signal (RTS, DTR); there is no need for a jumper wire setting for half-duplex (RS-485) mode, its just plug & play.

• Standards: RS-232C, RS-485 EIA/TIA


• Connector: RS-232 DB9 female, RS-485 DB9 male


• Protection: RS-232 ±15KV ESD protection, RS-485 each line 600W lightning, surge protection


• Isolation: Isolated voltage 2,500Vrms 500VDC non-stop


• Working mode: Asynchronous half-duplex


• Transmission rate: 38,400bps to 300m; 9,600bps to 1.2Km


• Operating temperature: -25 to 70


• Relative humidity: 5% to 95%