Finally got this to work with my old ET-400/402 system after losing the original, and the buttons feel just as responsive as the day I first used it. Pairing was straightforward with the receiver, though I had to grab my own wall charger since that’s not included. Solid replacement for the price.
Jacob★★★★★
The pairing process was genuinely painless — it synced with our school's ET-400 system in under a minute, and the buttons feel solid enough for daily classroom use. Just remember you'll need to grab your own charger and clip, since those aren't tossed in the box.
Emma★★★★★
Swapped this in for a spare and it paired with our existing receiver without a hitch. The buttons have a solid click that's easy to feel even when I'm holding it mid-lecture, and battery life has held up through a full week of classes so far.