Check the listing for details. Mercury M5-16DO Access Control System Units Component Controller PCB PWM516DO. Condition: New – Open box. Listed at 75.00 USD. This Mercury M5-16D0 Access Control System Units Component Controller PCB is a great addition to your security system. It is designed to provide maximum functionality with its replacement CPU board that guarantees optimal performance. This unit is compatible with HID brand products and is suited for surveillance and alarm equipment. The model is Mercury and the unit type is a component controller PCB. (Bin j) The custom bundle is not included, and the item is new but open box. This PCB is perfect for businesses and industrial facilities looking to upgrade their security system. Mercury, Lenel