APEM, Inc., manufacturer of human-machine interface products, brings you the newest option to the Q series indicator range:  the 16mm Secret-Until-Lit LED indicator.  APEM’s Q16 secret-until-lit LED indicators feature a black polycarbonate insert that gives you the ability to hide a specific custom legend until the indicator illumination is turned “ON”.  The polycarbonate insert is reverse-side silk screen printed, allowing for any custom symbol you require. This new Q16 option also includes a standard rear epoxy-sealed bezel for IP67 protection from harsh environments and rugged outdoor applications. The new Q16 secret-until-lit indicator further enhances APEM’s large portfolio of LED indicators, which includes the Q series range in 6, 8, 12, 14, 19 & 22mm, QS series snap-in LED Indicators, QRM rear-mount LED indicators, and QRM NV night-vision compatible LED indicators.