Infrared head size: diameter 32.5mm, height 27mm (dimensions are for reference only, the actual error is 2mm) IEC standard industrial level, the converter adopts British chip, RS485 transceiver circuit with 15KV ESD protection, Taiwan Yiguang industrial grade optical receiver/transmitter It supports signal conversion of all protocols, such as IEC62056-21, IEC1107, DLMS, MDBUS, etc., and transmission rate is: 300/600/1200/2400/4800/9600/19200bps. Magnetic adsorption type, easy to fix on the optical interface device. Infrared and IR are isolated by optocouplers and isolated power modules to prevent interference and stabilize communication. Isolated USB to near-infrared IR converter can be networked Applicable to: foreign electric energy meter, gas meter, water meter meter reading data acquisition Industrial Grade Meter Reader Near infrared, wavelength 940nm USB to NIR is suitable for monitoring system data , smart data , grid power monitoring data , energy consumption monitoring system data , photovoltaic and other system monitoring data , intelligent monitoring data , intelligent robot data , smart security system applications with optical communication interfaces, such as data acquisition, cloud platform data acquisition, and electric energy meter calibration and re-inspection table. Colour:blue Material:plastic+metal Size:Length: about 1.5 meters Package Contents: 1 x 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.