The SDBT-MSX is the most advanced in its class of magnetic proximity switches, it’s about the size of a baby’s pinky finger. The SDBT-MSX’s auto teach-in feature automatically learns and sets the correct final switching point when the machine is turned on the first time, unlike legacy proximity switches which need follow-up, manual tuning after commissioning. SDBT-MSX is set-it-and-forget-it technology.