Application:data collection of electric energy meter, gas meter and water meter. CP2102 chip, powered by USB interface, no external power supply required. Support multiple versions of Windows , for MacOS, Linux and other systems. Industrial-grade meter reading device, near-infrared, wavelength 940nm. Infrared head size:diameter 32mm, transmitting and receiving distance: 6.5mm (dimensions are for reference only, tolerance 2mm) The converter adopts CP2102 chip, 15KV ESD protection transceiver circuit, Taiwan Yiguang industrial grade optical receiver/transmitter. Transparent transmission, support IEC62056-21, IEC1107, DLMS, MDBUS and other full protocol signal conversion. The transmission rate is:300/600/1200/2400/4800/9600/19200bps. Installation:25mm*15mm*5mm galvanized magnet, which can be adsorbed and fixed on the optical interface device. Environment:The specified working range is -25C-70C. type:infrared converter Colour:Black & White Material:plastic+metal Size:About 2 meters long Package Contents: 1 * -USB to Near 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.