ZHA’s device library acknowledges temperature reports from a supported Tongou TO-Q-SY1-JZT breaker variant instead of discarding them. Without an acknowledgement, the breakers repeatedly resent the messages and crowded the Zigbee network.
On a test network with nine breakers and a CC2652P coordinator, incoming traffic fell from roughly 900 to 170 messages per minute. Existing controls and power readings remain; the reported temperature is deliberately not exposed because its value did not reliably follow the load. The change targets the tested variant and device layout.