A:3-6 customers use the password to select  B: low battery indicator  C: international standard ADI key D: rapid voltage test E: enhanced LED display  F: two combination passwords can be selected G: visual operating system with operation prompt  H: low board height is raised for easy use  I: 100verification records J: optional internal lighting.

5m'm A3coldrolld plate 2mm standrd box body 19 mm diameter solid steel lach

4AAbasic battery black or custom color (no extra charge) provides mechanical emergency