Banner's M12 family of sensors offers a full complement of sensing modes, all packaged in a compact yet rugged metal housing. The 12 mm barrel design allows them to mount easily into tight spaces, with the excellent performance expected of much larger sensors. The single-turn Gain potentiometer on most models and two Signal LEDs (positioned on either side of the housing for visibility) provide easy alignment and configuration for reliable sensing). Note that when the signal LED is not ON, the green Power LED is visible through all three LED ports.