I've had the same exact model on my desk at work for 5 years, and it's worked flawlessly.So, I finally bought one for my home office. Worked for exactly three staples, then the sensor died. Amazon was very quick to provide a replacement. But after a few uses, it too stopped stapling. Upon inspection, a pin fell out, no idea where it goes. This is going back too. Will now try a different brand.Not sure what changed in their manufacturing the past 5 years, but it's definitely a change for the worse.Don't buy this stapler!