DTLM2 SKU DTLM2-5050 2 inputs for Alarm/Door monitoring and alarm mask/RQE. Enables Auto-Relock function on a door. Consists of MELM2 prewired to one side of a two row terminal block. Locate at door or device supervised. Must Be Certified To Purchase Hirsch Products Please log in to see price or purchase this item Request an account Line Comment Special Price