[RELEASE] Leviton Smart Load Center

Custom Apps and Drivers Custom Drivers
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[RELEASE] Leviton Smart Load Center — Hubitat Driver (LDATA / LWHEM)

Sharing a Hubitat driver for the Leviton Smart Load Center (LDATA / LWHEM panels with smart breakers). Ported from the excellent rwoldberg/ldata-ha Home Assistant integration — all API credit goes to rwoldberg.

What It Does

  • Real-time per-circuit power monitoring via WebSocket (same live feed as the My Leviton app)
  • Auto-creates child devices under the panel — one per smart breaker, one per CT clamp
  • Per breaker: Power (W), Current (A), Voltage (V), Frequency (Hz), Energy (kWh), Breaker State
  • CT clamps: Power, Current, Energy (Grid, Solar, Generator, etc.)
  • Optional remote breaker trip/reset for 2nd gen breakers — disabled by default
  • Auto-reconnecting WebSocket with REST polling fallback for energy counters

Supported Hardware

Device Support
Leviton LWHEM / LWHEM-2 (2nd gen) :white_check_mark: Full
Leviton LDATA (1st gen) :white_check_mark: Full
2nd Gen Smart Breakers (Remote On/Off) :white_check_mark: Monitor + Control
1st Gen Smart Breakers :white_check_mark: Monitor only
CT Clamp Sensors (Grid / Solar / Generator) :white_check_mark: Monitor

Installation (No plan for HPM release since this is niche)

:warning: Install the Child driver first, then the Parent.

  1. Go to Drivers Code → + New Driver and paste + save each driver — Child first:
  1. Go to Devices → Add Device → Virtual, set Type to Leviton Smart Load Center Parent, save.
  2. Open the device, enter your My Leviton email and password in Preferences, click Save Preferences.

The driver will log in, discover your panel, and auto-create all child devices. Watch Logs for [LDATA] messages — takes about 30–60 seconds.

:warning: Breaker Control Safety

Enable Allow Breaker Control in Preferences to unlock Switch commands on breaker child devices.

  • off = TRIPS the breaker (cuts power immediately)
  • on = RESETS the breaker (restores power)
  • Only 2nd gen breakers with canRemoteOn = true support remote reset — check that attribute before automating
  • All commands go through Leviton's cloud — won't work without internet

Troubleshooting

No child devices? — Confirm both drivers are saved with names exactly as shown above. Check Logs for errors.

Auth Failed? — Wrong credentials, or 2FA is enabled on your account. Temporarily disable 2FA in the My Leviton app, save Preferences to re-auth, then re-enable it. Token lasts ~60 days.

Power showing 0W? — Click Refresh on the parent to wake the panel. Confirm it shows Connected in the My Leviton app.

Re-discover after renaming circuits? — Use Delete Children on the parent, then Refresh.

Credits: rwoldberg for all the hard API work. Please post questions or issues in this thread with your panelFirmware attribute value and debug logs. Happy monitoring! :zap:

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Leviton LDATA / LWHEM Driver Update — v1.2.0 ( Parent & Child Driver)

Fixes & Stability

  • Fixed WebSocket protocol handling (removed incorrect Socket.IO logic causing disconnects)
  • Improved WebSocket stability and reduced reconnect loops
  • Added better heartbeat tracking to detect real connection loss only
  • Fixed duplicate WS updates for breakers and CTs

REST / Polling Improvements

  • Removed bandwidthToggle() from regular polling (was resetting WebSocket connection)
  • Keepalive now only runs in a controlled way during setup

Reliability Fixes

  • Fixed multiple numeric type issues (Float/BigDecimal/Integer crashes)
  • Improved breaker/CT data handling and update safety
  • Better total power calculation stability

Debug Logging

  • Debug logging now auto-disables after 30 minutes to keep logs clean

:bar_chart: Summary

This update focuses on fewer disconnects, cleaner logs, and more stable real-time updates.

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