Altech provides Ring Sensors with different operating principles, including Normal Sensitivity, High Sensitivity, and Ultra High Sensitivity. These sensors are used in applications like Freefall, metal part counting, wire breakage detection, and grinding operations. Ultra High Sensitivity sensors are used for detecting small particles in bulk materials. Modular Flat Pack Sensors detect metal in conveyor belts and chutes, while FS Series Multi-Channel Flat Sensors accurately separate metallic particles.