Canon VB-H43 Operation Manual page 181

Turn off the camera.
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There is no on/off switch on the camera. Turn the
camera on and off by plugging in or unplugging LAN
cable (PoE power supply), AC adapter, or external
power plug.
Turn on the power while pushing the reset switch, and
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keep pushing the reset switch for 5 seconds or more.
The reset switch is located in a recessed area. Push
the switch using the tip of a slender object such as a
clip.
All settings of the camera, except for the date and
time, are restored to factory default settings.
Important
If the reset switch is pushed, network-related settings will also
be restored to factory default settings including the camera's IP
address, subnet mask, default gateway address, etc.
Accordingly, you can no longer operate the camera from the
PC you were using to connect to the camera before. When
initializing the camera, use the "Camera Management Tool"
installed in your PC to set an IP address appropriate for the
environment in which the camera is used (See "Making Initial
Camera Settings" (p. 28)).
Reset Switch
VB-H630VE/VB-M620VE
Reset Switch
VB-H630D/VB-M620D
Reset Switch
Reset Switch
For VB-H630VE/VB-H630D/VB-M620VE/VB-M620D,
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attach the dome case.
For dome case attachment, see the "Installation
Guide" included with the camera.
Restore Default Settings
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