VALVE POSITION MONITOR(APL-SERIES)  -Solid and flexible design   Aluminum die-casting housing and powder coating.  -Bolts on visual position indicator  -Quick-set cam   Spring loaded splined cam.   No need to adjust again after initial setting.   Easy setting without tool.  -Dual cable entries  -Captive cover bolts   No worry to loose bolts while cover open.   Spring loaded cover bolts(APL-5 SERIES)  -Easy mounting bracket   NAMUR standard stainless steel shaft and bracket.