The problem
New Tuya TS0601 variant with manufacturer _TZE284_cvub6xbb joins ZHA but no working climate entity is created and EF00 data points are not decoded. Sibling _TZE204_cvub6xbb works out of the box; _TZE284_ appears to use the same DP schema but a different manufacturer string and slightly different endpoint signature.

Environment

• Home Assistant OS 16.2
• HA Core 2025.10.4
• Supervisor 2025.10.0
• Integration: Zigbee Home Automation (ZHA)
• Radio: TI CC2652 (zigpy-znp)
• Use case: hydronic floor heating (230 V actuators)

Device

• Product platform: Tuya TS0601 (wall thermostat)
• Manufacturer: _TZE284_cvub6xbb
• Model: TS0601

ZHA device signature

{
  "endpoints": {
    "1": {
      "profile_id": "0x0104",
      "device_type": "0x0051",
      "input_clusters": ["0x0000","0x0004","0x0005","0xed00","0xef00"],
      "output_clusters": ["0x000a","0x0019"]
    },
    "242": {
      "profile_id": "0xa1e0",
      "device_type": "0x0061",
      "input_clusters": [],
      "output_clusters": ["0x0021"]
    }
  },
  "manufacturer": "_TZE284_cvub6xbb",
  "model": "TS0601"
}

Observed behavior

• Device joins, but logs show EF00 frames as unknown cluster command; no DP decoding.
• Only occasional 0x0006 events; climate entity remains missing or “unknown”.

Expected

• ZHA should handle EF00 (MCU V2) and expose a standard climate entity with:
  local_temperature, occupied_heating_setpoint, system_mode, preset_mode, child_lock
  (plus optional FBH settings like calibration, hysteresis, min/max limits, window detect, sensor selection, running state).

Known DP mapping from live logs

• DP 101 → local temperature (×10)
• DP 1 → heating setpoint (°C or ×10)
• DP 3 → system mode {0: Auto, 1: Heat, 2: Off}
• DP 11 (sometimes 12) → preset mode
• DP 6 → child lock (bool)
  (Optional DPs observed on this model family: 2 power, 24 temp calibration, 7 hysteresis, 35 min setpoint, 8 max setpoint, 32 window detect, 27 sensor selection, 102 running state.)

Steps to reproduce

1. Permit join and add _TZE284_cvub6xbb TS0601 to ZHA (CC2652).
2. Check logs: EF00 commands not decoded; no working climate entity.

Additional info

• _TZE204_cvub6xbb (TS0601) works in ZHA; _TZE284_ seems equivalent on DP level but needs a matching handler/signature.
• I can attach pairing/runtime logs and test a PR/branch.