Works perfect, on Qlima SC-JA2519 ! Used in a Qlima SC-JA2519 air-air heat pump from the Swedish store Jula. Works perfectly,i am glad to have local control and not depend on tuya cloud services any more.. Very happy with the dongle :-) (source: https://www.tindie.com/products/smartlightme/wifi-dongle-for-air-conditioners-midea-electrolux/#product-reviews)