Optex adds the SL-350QFR, a 350 ft. battery-powered photoelectric detector requiring no trenching or wiring. The SL-350QFR can be a cost-effective solution for larger sites, with additional features such as quad beam detection and extended battery life of up to 10 years. The SL-350QFR is available in a wireless-ready version that works with most manufacturers’ wireless systems and an iSeries SL-350QFRi version that includes an Inovonics wireless EN1941 transmitter pre-installed. Both versions come with four batteries per set, with the option of expanding to eight for up to 10 years of battery life. In addition, the SL-350QFR is compatible with the AX-TW200 line of beam towers for a clean, concealed, wireless mounting option.