1）Drill a hole on the door frame.

2）At the appropriate height of the door panel, drill a circular hole greater than or equal to 20mm in diameter and two small circular holes above and below the circular hole at the 58mm position on the side cabinet wall where the door panel opens.   （Figure 1）

3）Install card reader housing and lock box：

Pass the card reader housing PCB cable through the door hole, and make the two screw posts on the housing, pass through the two small round holes on the door; put the lock box fixing seat in the hole, make the lock tongue face the door opening side of the door cabinet, and align the screw holes; Remove the battery cover and fix it with the mask with two countersunk 4*25 screws.

4）Install automatic pop-opening device:

On the inside of the door cabinet wall, at a proper height from the lock tongue, use 3 4*16 countersunk head tapping screws to fix.

---------------------------------------------------------------------------------------------------------------