The Rosslare AY-K12C Proximity Reader Kit combines a compact mullion-mount access control reader with a 25 pack of compatible Rosslare AT-ERS-26A-3001 ISO proximity cards. This bundle is designed for professional 125 kHz EM RFID access control installations. The AY-K12C reader supports EM 4102 125 kHz credentials and offers selectable output formats, including Wiegand 26-bit, Clock & Data, and RS-232. It includes an 18 in pigtail cable and supports external LED control, buzzer control, reader hold control, and optical wall tamper detection. The included AT-ERS-26A-3001 cards are read-only 125 kHz EM ISO PVC credentials with Wiegand 26-bit formatting. Each card includes inkjet-printed facility code and card ID in decimal format for easier credential management. Built for indoor and outdoor use, the AY-K12C reader has an epoxy-potted IP65 housing made from UV-resistant polycarbonate. This kit is suitable for commercial doors, residential access control, office entry systems, gated entry points, and credential-based security installations.