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Hi, there. Thank you for reaching out to us about LG Air Conditioner (LW1223HRSM) model. The primary difference between the LW1223HR and the LW1223SM (often referred to as the LW1223HRSM) comes down to connectivity. The LW1223HRSM features Wi-Fi and LG ThinQ technology, enabling temperature control, mode changes, and schedule settings through your smartphone or voice commands via Amazon Alexa and Google Assistant. The LW1223HR is the non-Wi-Fi version, providing the same strong cooling and heating performance, operated via the included remote or the unit's digital control panel. For additional resources, check out https://www.lg.com/us/support/product/lg-LW1223HR and https://www.lg.com/us/support/product/lg-LW1223HRSM. If you have more questions or need further assistance, please send us an email at [email protected]. We're here for you! ^Juvy
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