User Guide

About This Manual
Thank you for choosing Akuvox’s R20A door phone. This manual is intended for end users, who need to properly configure the door
phone. This manualis applicable to 20.0.1.2xx version, and it provides an overview of the most essential functions and features of
the product. Please visit Akuvox forum or consult technical support for any new information or latest firmware.
Note: Please refer to universal abbreviation form in the end of manual when meet any abbreviation letter.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following
measures: