Application: Data collection of electric energy meters, gas meters, and water meters new CP2102 chip, USB interface power supply, no external power supply required. Supports multiple versions of operating systems, for MacOS, Linux and other systems. Industrial grade meter reader, far infrared, wavelength 940nm. IEC standard industrial grade, the converter uses CP2102 chip, ±15KV ESD protection transceiver circuit, industrial grade optical receiver/transmitter. Modem signal frequency: 38KHz The transmission rate is: 300/600/1200/2400bps Material: plastic+metal colour: Black+White Package Contents: 1 x USB to Far Infrared Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. USB to Far Infrared Cable Meter Reader Cable FOR METER READIING