Part No. AMAR1900HB-TR - Case 6-OW-120877-78840 - Question: How to change from AC to DC
Step 1. Remove screw x 14 to open back cover.
Step 2. Remove 5 components but keep all the connections.
Step 3. Remove screw x 4 to remove this bracket.
Step 4. Attached the new bracket.
Step 5. Attach copper stud x 4 and stable DC9~36V power module.
Step 6. Install all the PCB to the new bracket.
Step 7. Connect the power cable and testing
Step 8. Install the back cover.