The SMARTLIGHT SLWF-01 Pro v2.1 provides Wi-Fi capabilities for a wide variety of ductless HVAC systems. This simple Wi-Fi dongle is easy to install and integrate into Home Assistant via autodiscovery.
Not sure if its just my special version of the Mr Cool - but there were little tabs inside the usb port i was plugging into that initially prevented me from being able to plug in this dongle. I was able to take a small craft knife to the OEM connector to cut out the little white plastic protrusions that were preventing the dongle from being inserted. Once that was done, it connected together easily and setup was a breeze.
egeatay
– verified owner
, February 2, 2025
Works great with my blueridge (alpine) mini split system. The pre loaded firmware works great and home assistant automatically discovers it. Everything works out of the box. The only issue was that I had to cut off the excess plastic on my mini split's port with an exacto knife, which almost damaged the port, something I cant easily replace.
Scott
– verified owner
, May 5, 2025
Working great in my 12k BTU Midea U-shape window AC. Model # MAW12U1QWT it came with
Matter capability via the included USB dongle. I never even gave it a chance as I immediately removed the Matter dongle and replaced it with the Ductless HVAC Wi-Fi Module from Cloudfree, before I ever even plugged in the new AC unit. Setup was super easy and it works great with Home Assistant. I bought this back in the summer of 2024 and it's now going strong on its second season now in 2025. I highly recommend it and Cloudfree!
Chris
– verified owner
, June 10, 2025
This was literally the answer to integrating my MrCool AC into Home Assistant! I tried everything else. Thank you so much! I'm buying a couple more for the rest of the units.
Jon
– verified owner
, June 14, 2025
Works great with my Mr. Cool units!
Wanted to tie my HVAC in with HomeAssistant and HomeKit but there wasn't a reliable solution with the provided WiFi dongles that utilized a 3rd party cloud solution.
After installing and setting the WiFi network, it worked straight out of the box. Added into my HomeAssistant setup, and ties into Apple HomeKit nicely with HomeBridge.
Sean Caile
– verified owner
, July 1, 2025
Works great with Senville 110V mini-split.
Took about 2 minutes to pair it to WiFi and HomeAssistant found it right away.
Great deal and quick shipping. Thank you!
Matt H
– verified owner
, August 19, 2025
This was perfect for my use. It worked with my Keystone KSTAW08INV-HC window mounted heat pump and Home Assistant as soon as I plugged it in. I then updated it using a USB-C cable so I could pull it into ESPHome Builder and reconfigure it slightly. Very happy with it!
Ben
– verified owner
, October 2, 2025
Worked perfectly with my Midea U 12K BTU window AC (model MAW10V1QWT). Completely turnkey setup and was auto-discovered by Home Assistant as soon as I connected to WiFi. No FW flashing required. Tip: default password for temp SSID AC-Wifi is slwf01pro. If captive portal doesn’t open, browse to http://192.168.4.1
Rick
, October 11, 2025
Worked exactly as described in my Carrier 40M mini split, totally plug and play with home assistant with no updating required.
AK
– verified owner
, February 27, 2026
Worked on 2 different models of Mr Cool - auto discovers - no issues
MI User
– verified owner
, April 24, 2026
working out of the box on a Whynter NEX portable AC (Midea Duo Clone). Whynter NEX Model # ARC-1230WNH. FIY - if you try this, you need to remove the hose, then 10 more screws from the side and back, and remove the back panel all in one shot. then all the screws holding the front panel on. No need to remove the top panel, it comes out with the front panel in one piece. The factory dongle is clipped to the front panel right behind the "Whynter" logo. Also, customer service is stellar - A++ , will do business again.
Florian McKee
– verified owner
, May 13, 2026
Works out of the box with my Cooper & Hunter Olivia. Amazing price. How is that even possible in 2026?
Cole Hanson
– verified owner
, April 14, 2023
Works on my MrCool unit which has zero HA access and a janky app. Was hoping to have more options in the system - looking forward to using this with HA!
The SMARTLIGHT SLWF-01 Pro v2.1 provides Wi-Fi capabilities for a wide variety of ductless HVAC systems. This simple Wi-Fi dongle is easy to install and integrate into Home Assistant via autodiscovery.
Not sure if its just my special version of the Mr Cool - but there were little tabs inside the usb port i was plugging into that initially prevented me from being able to plug in this dongle. I was able to take a small craft knife to the OEM connector to cut out the little white plastic protrusions that were preventing the dongle from being inserted. Once that was done, it connected together easily and setup was a breeze.
egeatay
– verified owner
, February 2, 2025
Works great with my blueridge (alpine) mini split system. The pre loaded firmware works great and home assistant automatically discovers it. Everything works out of the box. The only issue was that I had to cut off the excess plastic on my mini split's port with an exacto knife, which almost damaged the port, something I cant easily replace.
Scott
– verified owner
, May 5, 2025
Working great in my 12k BTU Midea U-shape window AC. Model # MAW12U1QWT it came with
Matter capability via the included USB dongle. I never even gave it a chance as I immediately removed the Matter dongle and replaced it with the Ductless HVAC Wi-Fi Module from Cloudfree, before I ever even plugged in the new AC unit. Setup was super easy and it works great with Home Assistant. I bought this back in the summer of 2024 and it's now going strong on its second season now in 2025. I highly recommend it and Cloudfree!
Chris
– verified owner
, June 10, 2025
This was literally the answer to integrating my MrCool AC into Home Assistant! I tried everything else. Thank you so much! I'm buying a couple more for the rest of the units.
Jon
– verified owner
, June 14, 2025
Works great with my Mr. Cool units!
Wanted to tie my HVAC in with HomeAssistant and HomeKit but there wasn't a reliable solution with the provided WiFi dongles that utilized a 3rd party cloud solution.
After installing and setting the WiFi network, it worked straight out of the box. Added into my HomeAssistant setup, and ties into Apple HomeKit nicely with HomeBridge.
Sean Caile
– verified owner
, July 1, 2025
Works great with Senville 110V mini-split.
Took about 2 minutes to pair it to WiFi and HomeAssistant found it right away.
Great deal and quick shipping. Thank you!
Matt H
– verified owner
, August 19, 2025
This was perfect for my use. It worked with my Keystone KSTAW08INV-HC window mounted heat pump and Home Assistant as soon as I plugged it in. I then updated it using a USB-C cable so I could pull it into ESPHome Builder and reconfigure it slightly. Very happy with it!
Ben
– verified owner
, October 2, 2025
Worked perfectly with my Midea U 12K BTU window AC (model MAW10V1QWT). Completely turnkey setup and was auto-discovered by Home Assistant as soon as I connected to WiFi. No FW flashing required. Tip: default password for temp SSID AC-Wifi is slwf01pro. If captive portal doesn’t open, browse to http://192.168.4.1
Rick
, October 11, 2025
Worked exactly as described in my Carrier 40M mini split, totally plug and play with home assistant with no updating required.
AK
– verified owner
, February 27, 2026
Worked on 2 different models of Mr Cool - auto discovers - no issues
MI User
– verified owner
, April 24, 2026
working out of the box on a Whynter NEX portable AC (Midea Duo Clone). Whynter NEX Model # ARC-1230WNH. FIY - if you try this, you need to remove the hose, then 10 more screws from the side and back, and remove the back panel all in one shot. then all the screws holding the front panel on. No need to remove the top panel, it comes out with the front panel in one piece. The factory dongle is clipped to the front panel right behind the "Whynter" logo. Also, customer service is stellar - A++ , will do business again.
Florian McKee
– verified owner
, May 13, 2026
Works out of the box with my Cooper & Hunter Olivia. Amazing price. How is that even possible in 2026?
Cole Hanson
– verified owner
, April 14, 2023
Works on my MrCool unit which has zero HA access and a janky app. Was hoping to have more options in the system - looking forward to using this with HA!
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