How to locate the reset button on a dialer?
You need to press the reset button if you want to reset the password on a dialer.
The reset button is hidden behind the upper cover on a dialer.
Use a small screw driver to remove the screw, remove the cover, then if necessary, remove the paper. You should see the button on the lower left corner.
If you don't see a white color button, chances are the white color cap is lost inside the dialer. You can still use a small screw driver to reach into the hole, and press on the black color button.
Please refer to the instruction for how to reset the dialer.