TESTO 6351, Инструкция по эксплуатации

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4 Transmitter
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4.4.2. Key cover
To prevent unauthorized operation of the keys, the standard key
frame can be replaced with a key cover.
If the key cover has been assembled, the service flap must be
opened for operation.
Attaching the key cover
✓
The service flap is opened, see 4.3.1. Opening the instrument.
1.

Unscrew screws (3) and remove key frame (2) .
2.

Insert key cover (1) into service flap and tighten screws (3) .
3.

Close and screw down the service flap.
4.4.3. Password protection
The user menu can be protected with a four-digit numerical code
(see 4.4.6.3. Editing Main Menu Settings) so that access to the
user menu is denied to unauthorized persons not familiar with this
numerical code.
If the password protection is not to be used, the numerical code
"0000" must be entered. This is also the status upon delivery.