Tongou/Chayo TO-Q-SYS-JZT (_TZE284_6ocnqlhn) severe radio spam / network flooding without value changes

What happened?

The smart DIN rail meter Tongou TO-Q-SYS-JZT (Model: _TZE284_6ocnqlhn / TS0601) floods the Zigbee network by broadcasting 3 to 4 messages per second. It continuously pushes the entire telemetry payload even when there are zero changes in state, power, voltage, or current.

What did you expect to happen?

The device converter needs an optimization in fromZigbee to drop duplicate/identical sequential payloads at the converter level (similar to how filtered_cache works), WITHOUT introducing any time-based throttling (like debounce or throttle).

It is critical that time-based throttles are NOT hardcoded into the device profile, as this is a main electrical breaker. If a real over-current or trip event occurs, Home Assistant must receive the state change in milliseconds (0.01s) to trigger emergency automations. The converter should only discard messages if the electrical values and relay state are exactly identical to the cached ones.

How to reproduce it (minimal and precise)

1. Pair the TO-Q-SYS-JZT device with Zigbee2MQTT.
2. Look at the live log or Last Seen timestamp in the Z2M frontend.
3. The device spams the coordinator every ~250-300ms with identical data.

Zigbee2MQTT version

2.13.0

Adapter firmware version

Revision: 20250212

Adapter

SMLIGHT SLZB-06Mg24U

Setup

• Zigbee2MQTT running in a Docker container (containerized) on a Synology DS725+ NAS.
• Docker Image: Official koenkk/zigbee2mqtt

Device database.db entry

No response

Debug log

[9/11/2026, 9:57:36 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:36 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:37 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:46 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:46 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:46 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:46 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:47 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:56 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:56 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:56 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:57:56 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:06 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:06 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:06 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:06 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:16 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:16 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:16 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:16 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:17 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:26 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:26 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:26 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:26 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":38,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:27 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:36 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:36 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:46 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'
[9/11/2026, 9:58:46 AM] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/MCB retea', payload '{"control_mode":"full_control","current":0.42,"energy":25.47,"event":"manual_on","last_seen":"2026-09-01T17:39:19.133Z","over_current_setting":"Trip","over_current_threshold":16,"over_power_setting":"Trip","over_power_threshold":3680,"over_voltage_setting":"Trip","over_voltage_threshold":260,"power":49,"power_factor":0,"state":"ON","temperature":39,"temperature_setting":"Trip","temperature_threshold":50,"test1":0,"test5":2547,"under_voltage_setting":"Trip","under_voltage_threshold":200,"voltage":222.4}'

Notes

No response

Start by locating the TO-Q-SYS-JZT device converter and reading its fromZigbee handling alongside the existing filtered_cache behavior. Reproduce the repeated identical payloads, then verify that identical sequential electrical values and relay state are dropped without time-based throttling, while changed values are still delivered immediately.