Tired of jammed cases or unnoticed decap failures ruining your reloading session. The Mark 7 positive decap sensor is your press's new best friend. Mounted at station #2, this smart sensor keeps a vigilant eye on every primer and case. Using optical detection, it checks whether a spent primer has been ejected-if not, it stops the press immediately so you can fix the problem before it becomes a costly one. And it does more than just monitor primers. When activated, it also acts as a brass sensor, halting the press if no case is detected-saving your time, your tools and your sanity. Reloading new brass. Just turn it off with a tap from your Mark 7 touchscreen. It's that easy. Optical decapsense sensor boosts reliability and accuracy in your mark 7 autodrive setup The sensor halts operation immediately if no cap or brass is detected, enhancing safety and efficiency