Landis+Gyr ULTRAHEAT T230 Manual page 24

Additional ordering information for wireless M-Bus
Ordering example battery life 11 years, data telegram F002:
T230-XXXX-XXXX-X-XX-FE-XXX + F001+ 20 sec. + encryption
F = battery life
E = wireless M-Bus function
F002 = mobile data reading
20 seconds = sending interval
Encryption (AES 128) = Yes / No
11 years
24/26