Mekontrol MEK-55 Reflex Light Beam Limit Switch

The Mekontrol MEK-55 Reflex is a vintage photoelectric limit switch designed for industrial automation applications, utilizing reflex (retroreflective) technology to detect objects by bouncing a light beam off a reflector. Manufactured by Mekontrol Inc. in Northboro, Massachusetts, this device is ideal for conveyor systems, machinery guarding, and position sensing in manufacturing environments. Key features include a rugged, weather-resistant enclosure suitable for harsh industrial settings, with an integrated indicator light for status monitoring. It offers reliable non-contact detection, reducing wear compared to mechanical switches, and can handle moderate distances with high accuracy. Advantages over similar products include its simplicity and durability in older systems, though it may lack modern digital interfaces found in contemporary sensors like those from Banner or Keyence. Drawbacks include potential obsolescence, limited compatibility with newer PLCs without adapters, and higher power consumption. Based on image analysis, this unit appears used with visible wear, scratches, and handwritten notes (e.g., 'BAD'), suggesting it may require testing or refurbishment. Applications span packaging, material handling, and safety interlocks, providing cost-effective retrofitting for legacy equipment.