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Theengs Plug - ESP32 BLE MQTT gateway, smart plug, energy consumption

Theengs Plug - ESP32 BLE MQTT gateway, smart plug, energy consumption

Regular price $39.90 USD
Regular price $44.90 USD Sale price $39.90 USD
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Put your DIY Smart Home to the next level with this 3-in-1 cloud-free Smart Plug.

The Theengs Plug can:

  • Act as a BLE Gateway to retrieve data from more than 80 sensors
  • Be controlled remotely
  • Measure the energy consumption of the plugged device

Theengs Plug can work with Home Assistant, OpenHAB, Jeedom, NodeRed, or any MQTT-compatible DIY Home Automation controller.

Theengs Plug requires an MQTT broker to work. A beginner MQTT level is needed.

Power Supply 100-120VAC, 60Hz
Max current 15A
Microcontroller ESP32
WiFi Band 2.4 GHz
Protocol MQTT
Operating Humidity 0%~95% (No condensation)
Operating Temperature 0 ºC ~ 40 ºC
Storage Temperature -10°C ~ 50°C

4.05in * 1.37in * 2.4in

103mm * 34.6mm * 61mm


Hardware UL listed (E499341)

Contains FCC ID 2AC72-ESPWROOM32


The plug is preloaded with OpenMQTTGateway and brings the following features:

  • Home Assistant MQTT convention auto-discovery, BLE devices are automatically created into Home Assistant
  • Adaptive scanning, the gateway adapts its parameters depending on the devices you have
  • Presence detection (beta), the plug publishes presence detection information
  • Filter list management
  • Over the Air update



  • What is the warranty period?

The Theengs Plug hardware warranty is one year from the date of purchase. See details here

  • Are you planning a plug for the European Market?

Yes, we have the project of a smart plug for the European Market.

  • Does the plug require internet access?

The plug uses the internet to check if new firmware is available but does not rely on a cloud service to work (unless you configure it to connect to a cloud service).

  • Do I have to pay customs/VAT taxes?

Yes, if you are located outside of the US, you will have to pay the customs and taxes related to your country.

The plug is delivered with firmware developed under GPLv3 license. By using it, you accept the terms and conditions of this license.

User guide:

View full details

Customer Reviews

Based on 7 reviews
Michael S.
Pretty good device

I bought this to connect a BM2 12v battery monitor on my car to my Home Assistant setup. It was a bit tricky to get the Theengs plug to recognize my WiFi; for some reason it took several tries for it to work. Once working, though, the sensors for my BM2 showed up automagically within seconds, and it has been rock solid for over the two weeks since then.

The only drawback I see is that the voltage sensor from the BM2 always says "Unknown", so I don't think the BLE data is being parsed correctly. The battery percentage works fine though, and that has been good enough.

The plug electricity usage monitoring has been an added bonus that I didn't think I'd use, but has turned out to be pretty handy.

Nick G
Theengs Smart Plug

I needed a smart plug to add to Home Assistant, and I also wanted to extend my Home Assistant’s Bluetooth range. This does both very well. Has every function you’d expect from a smart plug, and Bluetooth devices get added to MQTT easily. Integration and adding this to home assistant was quick and easy. Highly recommended.

Works well

Used plug to monitor sharp dips in voltage when running on generators during a power cut. Added a switch to disable the economy setting all integrated into Home Assistant. Worked with a developer who tested my scenario and gave me a custom file. Thank you!!

Brian Kurtz
MQTT takes learning, but AMAZING Customer Service!

I received two Smart Plugs with the intention of using MQTT to trigger them on or off (no added functions needed or tested). The product works great! The only issue was MY understanding of the Broker Setup, but Florian was WONDERFUL in walking me through steps (till I eventually found my own dumb typo) and now they work perfectly! Will be buying more for future projects!

Greg Powell
Works like a charm :)

I have two smart plugs working away in my greenhouse automation. Great product with Home Assistant.