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Original thread:
Post 7 made on Monday March 7, 2022 at 15:41
Daniel Tonks
Wrangler of Remotes
October 1998
MX-500, 600 and 650 are standalone non-computer-programmable. 600 and 650 are RF. 650 has a newer finish like 850 below. Capabilities are the same.

MX-700 was the first computer programmable model, in beige. It came after the 500 and before everything else. MX-800 and 850 are both RF. 850 mainly changed from a silver case / white/clear glossy “gemstone” keypad on the 800, to dark grey / matte medium silver painted and laser-etched keypad. Both 650 and 850 have separate “OK” buttons that are generally easier to hit than prior designs.

Otherwise they’re all pretty similar, with no practical difference in terms of speed or memory. Some will have a marketing name like “Aeros” and some won’t (every one of these had a name like that at one time), but it’s the same product.

You will also find these remotes sold under other names. Some OEMs provided them with a/v receivers and such, and after URC stopped marketing them, another company sold a version of the MX-850 under their name, and the software for that is compatible with other URC models too.

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