Capable of sensing more than 10 ft with opposed mode fibers or more than 3 ft with diffuse mode fibers, DF-G3 Fiber Amplifier is suited for contrast matching, intensity monitoring, web guiding, and dense sensing point environments. Dual digital displays show both signal level and threshold simultaneously. Users can setup sensor remotely via multi-function input wire which can be configured to control LED, gate amplifier’s output, remote teach amplifier, or setup cross-talk avoidance ring.