Let me tell you, this little rectangular lifesaver saved me during last week's heatwave when my original remote decided to retire mid-summer. The MUY-GL18NA replacement works exactly like OEM - same button layout, same satisfying clicky feedback.

PROS: Works immediately out of the box (just pop in AAA batteries). Perfectly syncs with my 5-year-old MSY unit without any programming. The Fahrenheit-only display isn't an issue for us Americans. At 1/3 the price of Mitsubishi's official replacement, this is a no-brainer purchase.

CONS: The instruction leaflet looks like it was translated through 3 languages - had to figure out the 'hidden' temperature adjustment buttons through trial and error. No backlight means nighttime fumbling.

Real-world test: After installing, I used it daily for two weeks. From waking up to a chilled bedroom to quick temp adjustments during movie nights, performance matched the original in every way. Even survived being dropped twice (oops!).

Final verdict? If your Mr Slim's remote is acting up or lost (like mine was), this $20 solution beats paying $60+ for an 'official' one. Just keep the manual for your model handy since this doesn't come with proper documentation.