The SEFM2410 gate and garage door opener mini wireless photo reverse photo beam has a range of 10 meters. The SEFM with infrared and transmit/receive functions is good in all weather conditions, and its compact size makes it a good choice for multi-tenant public buildings, as well as commercial and industrial gate openers and garage door operators. Adjustable optics include three modes: standard, synchronized and coded. In standard mode, the single infrared minicell receiver operates with one infrared minicell transmitter. In synchronized mode, you can use 2 x 2 infrared minicells without interference between them. In coded mode, you can enjoy simultaneous use of 4 x 2 infrared cells without mutual interference. This mini SEFM2410 wireless photo reverse beam works in rain, fog, dust and other environmental conditions.