M90/F2ES Pair Of Synchronized Photocells - M90 Slim Fixed Version For Gate/Light Automation

These are a pair of synchronized photocells from the M90 Slim series, specifically the fixed version model F2ES. In simple terms, they're a sender and receiver unit that create an invisible beam of light between them. If something breaks that beam, it sends a signal. They're commonly used to automate gates (so the gate stops if something is in the way), control security lights (turning them on when someone approaches), or in industrial safety systems. The 'synchronized' part means the two units are matched to work perfectly together. The 'fixed version' means they're designed to be mounted in a permanent position, not moved around. A reliable, essential component for DIY automation or security projects. Make sure you have the right model for your specific controller or system.