1 2 5 3 0 / 1 2 5 4 0 O W N E R ' S M A N U A LP/N 447203 Issue I IV-2A. Surface Mounting Instructions - 12530To mount the enclosure:1. Mount the enclosure at a convenient height for viewing indicators and operating switches.2. Use four #10 lag screws (not supplied) to secure the control unit to the wall. The screw type andlength must support the control unit, options and battery set.Note: You may need a different screw type, depending on the wall material.3. The 12408 Auxiliary Power Supply or battery enclosure may be mounted immediately below the mainenclosure, close nipple, allowing a minimum of 1 inch in between the enclosures for clearancebetween the doors. Keeping the wire run to the control unit short will keep the voltage drop to aminimum.