MULTICAL® 403
Kamstrup A/S · Technical description · FILE100000166_B_EN-55121689_M1_07.2023
3.2.11 Encryption level >T<
MULTICAL
403 must be ordered with encrypted data transmission between module and reading system. Data is
encrypted with 128 bit AES counter mode encryption. Data transmission can be encrypted with either a common or
an individual encryption key.
If you choose individual encryption key (T-code 3) the reading system must know the encryption key of each meter in
order to read the meter. The encryption key is sent to the customer and then ”matched” with the serial number of
the individual meter in the reading system.
If you choose common encryption key (T-code 2) the key can be used for reading a customer specific number of
meters. The key is created by Kamstrup A/S. A customer can have several encryption keys, e.g. one for each meter
type.
Note: Due to GDPR, the common encryption key is no longer provided.
The encryption level is configured as part of the meter’s configuration number via the T-code. Upon receipt of order
the T-code is by default configured at 3 - individual encryption key (unless otherwise informed by the customer). The
encryption level can be configured when submitting the order. The encryption level cannot be changed after
delivery.
Encryption with common key (customer specific)
Encryption with individual key
Encryption keys can be downloaded from Kamstrup’s customer portal ”My Kamstrup” at www.kamstrup.com.
Encryption keys are automatically entered in USB Meter Reader and READy.
3.2.12 Customer label >VVVV<
A 20x50 mm customer label can be printed on the meter’s front. The customer label to be printed on the meter’
front is determined by the VVVV-code. The customer label can show utility logo, a bar code or the like. By default the
meter’s serial number is written in the customer label field.
Please contact Kamstrup A/S for information on possible customer labels as well as regarding the creation of a new
customer label.
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