docs: for PR #3971 / issue #3644

ACKNOWLEDGEMENTS.md

@@ -499,7 +499,7 @@ Further device support has been made with the assistance of users. Please consid
 - [Pel1can111](https://github.com/Pel1can111) for assisting with support for Timeguard WFPIR motion light controller.
 - [ShiGhost](https://github.com/ShiGhost) for assisting with support for Keyun RGB chandelier fans and LS830-TY curtains.
 - [knowc](https://github.com/knowc) for assisting with support for Hydrotherm Dynamic/X8 Gen 6 water heaters.
-- [Waz-Cpt](https://github.com/Waz-Cpt) for contributing support for a dual dimmer module and improvements to EMS water heater.
+- [Waz-Cpt](https://github.com/Waz-Cpt) for contributing support for a dual dimmer module, Geyserwise MWs geyser controller, and improvements to EMS water heater.
 - [wizu](https://gitub.com/wizu) for contributing improvements to NAC AP470 purifier.
 - [MatthewBCooke](https://github.com/MatthewBCooke) for contributing support for Dynasty BTX fireplace.
 - [xlemassacre](https://github.com/xlemassacre) for contributing support for Kesser infrared 400W wall and 3000W heaters.

DEVICES.md

@@ -171,7 +171,7 @@
 - EMS Thermal 200L domestic heat pump hot water system
 - Ferroli Titano Twin water heater
 - Fisher air to water heat pump
-- Geyserwise TSE1 Geyser controller kit
+- Geyserwise TSE1 and MWS Geyser controller kits
 - Giatsu VAW 2 heat pump water heater
 - HY multifunctional heat pump V1.2
 - Hydrotherm Dynamic/X8 heat pump hot water systems (Gen 5 and 6)