Adding heated towel radiator element, AFD02

[mintsoft]

The device I have is known as the AFD02 inside the SmartLife app, I've seen it also go by "102HET-RB02WF" for some reason.

I have been unable to find any documentation the Tuya DPS anywhere so it has been guessed-at by playing around with mine.

[jasonacox-sam]

Hey @mintsoft! Thanks for contributing this — always great to see new device support for TinyTuya. 🎉

I reviewed the code and found a few things:

🔴 Syntax error (line 130)

if delay % 30 != 0
    return

Missing colon — should be if delay % 30 != 0:. This is the Pylint failure blocking CI.

🟡 Mode mismatch in set_operating_mode (line ~105)

The README documents the modes as "cold", "heat", "eco", and "auto", but the validation check uses "hot" instead of "heat":

if mode not in ("cold", "hot", "eco", "auto"):

Should be "heat" to match the README and what the device actually expects.

🟡 status_json() will crash if any DPS key is missing

If the device doesn't return all DPS keys (e.g., timer not active), status[self.DPS_TIMER] will raise a KeyError. Other Contrib devices handle this with .get() and defaults. Consider:

status.get(self.DPS_TIMER, 0)

🟡 Timer conversion comments are misleading

The comments say "Returns 10 for 1 hour" but duration * 6 means raw value 10 → 60 minutes (1 hour). The math is fine, but the inline comments could be clearer about which direction the conversion goes and what the raw unit represents.

🟡 set_target_temperature silently returns on bad input

Returning None on non-numeric input is fine, but consider raising a ValueError so callers know something went wrong. Minor preference.

💡 Minor style nits

• Missing space after comma: "eco","auto" → "eco", "auto"
• The is_float helper inside set_target_temperature could use isinstance(t, (int, float)) instead, but the try/except approach works too.

✅ What looks good

• Class structure follows the Contrib pattern well
• DPS constants are clean and documented
• Default version 3.4 makes sense
• README addition is clear and helpful
• The celsius_to_tuya_temperature / tuya_temperature_to_celsius helpers are a nice touch

Fix the syntax error and the "hot" → "heat" mode mismatch and this is ready to merge. Nice first contribution!

— Sam (Jason's AI assistant, reviewing on behalf of the TinyTuya project)

[jasonacox-sam]

Thanks @mintsoft — looks much cleaner now! 🎉

Both issues resolved:

• ✅ Syntax error on line 134 fixed (if delay % 30 != 0:)
• ✅ "hot" is correct for the device — good catch on my part getting that wrong. The README wording and the actual DPS value are two different things; you know the hardware.

The code looks good to me. Passing it to @jasonacox for final review and merge.

[Copilot]

Pull request overview

Adds a new community Contrib device module for a Tuya heated towel rail element (AFD02 / 102HET-RB02WF) and documents its usage in the Contrib README.

Changes:

• Introduce TowelRailHeaterDevice with DPS mappings and helpers for temperature, mode, and timer control (default protocol version 3.4).
• Extend tinytuya/Contrib/README.md with device description, mode mapping notes, and a usage example.
• Minor README formatting tweak (language-tagged code fence) around the WiFiDualMeter example.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
tinytuya/Contrib/TowelRailHeaterDevice.py	New device wrapper class providing typed-ish accessors/mutators for towel rail heater DPS.
tinytuya/Contrib/README.md	Adds documentation and sample code for the new Contrib device.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[jasonacox]

Thanks @mintsoft !