The correct operation of a sensor in a KNX installation can be verified by comparing the filter tables.
False
False. Filter tables live in line and area couplers and describe which Group Addresses are allowed to cross the coupler; they say nothing about whether a given sensor actually sends a telegram when stimulated. To verify that a sensor works, the correct tools are the ETS Group Monitor or Bus Monitor, which show in real time the telegrams generated by the sensor and the values carried. Filter-table comparison is a topology/routing check, not a functional sensor check.
Reach for the Group Monitor first when a sensor 'doesn't work' — if no telegram appears when you trigger it, the problem is on the sensor side, not in the couplers.
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