docs for issue #3451

ACKNOWLEDGEMENTS.md

@@ -1230,3 +1230,4 @@ Further device support has been made with the assistance of users. Please consid
 - [pacopaues](https://github.com/pacopaues) for assisting with support for RTI-Tek T5Z and Avatto ZWT198 thermostats.
 - [ivan-mendez](https://github.com/ivan-mendez) for assisting with support for Brokton BRST12 air conditioner.
 - [sanglyb](https://github.com/sanglyb) for assisting with support for Neptun Smart+ water leak control system.
+- [J14111](https://github.com/J14111) for assisting with support for Palicy EC Pro 4 chlorine generator.

DEVICES.md

@@ -1185,6 +1185,7 @@ port and password.
 - Mustool MT15/MT29 air quality box
 - Nedis WIFIPD10WT pill dispenser
 - Nedis WIFISA10CWT air quality monitor
+- Palicy EC Pro 4 pool chlorinator
 - PGST PA-010 indoor temperature and humidity sensor
 - PH-W218 water quality monitor
 - Pinjia PJ3101A presence sensor