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"""KNX Constants used within io."""
from typing import Final
from xknx.telegram.address import IndividualAddress
DEFAULT_INDIVIDUAL_ADDRESS: Final = IndividualAddress("15.15.250")
DEFAULT_MCAST_GRP: Final = "224.0.23.12"
DEFAULT_MCAST_PORT: Final = 3671
CONNECTION_ALIVE_TIME: Final = 120
CONNECTIONSTATE_REQUEST_TIMEOUT: Final = 10
HEARTBEAT_RATE: Final = CONNECTION_ALIVE_TIME - (CONNECTIONSTATE_REQUEST_TIMEOUT * 5)
# Maximum time an authenticated secure session may remain unused (without
# any communication over this session) until the session will be dropped.
SESSION_TIMEOUT: Final = 60
SESSION_KEEPALIVE_RATE: Final = SESSION_TIMEOUT - 10
XKNX_SERIAL_NUMBER: Final = bytes.fromhex("00 00 78 6b 6e 78")
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