A hobbyist replaced the stock STC-1000 style controller in a generic Shanhuchong Y-160 aquarium chiller with a $50 Wi-Fi-enabled Elitech ECS-974T industrial controller. The swap adds dual temperature probes (monitoring both the heat exchanger and the chilled water tank), improves accuracy, and enables remote monitoring. The new controller integrates with Home Assistant via a Tuya-local PR that was recently merged, with Elitech's documentation praised for making the HA config file creation straightforward.
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