Electronis device and optical head can be mounted separately In line with the necessities ensuing from significant environmental circumstances. Several feet off is a large problem but for my takes advantage of I believe two or three mm could be Alright. Although I don't program on executing something in addition https://www.eltegypt.com/News/newsdetails/%D9%83%D9%84-%D9%85%D8%A7-%D8%AA%D8%AD%D8%AA%D8%A7%D8%AC-%D9%85%D8%B9%D8%B1%D9%81%D8%AA%D9%87-%D8%B9%D9%86-%D8%AC%D9%87%D8%A7%D8%B2-%D9%82%D9%8A%D8%A7%D8%B3-%D8%A7%D9%84%D9%85%D8%B3%D8%A7%D9%81%D8%A7%D8%AA-%D8%A8%D8%A7%D9%84%D9%84%D9%8A%D8%B2%D8%B1/43