# It pays to check

#### DrG

##### Active Member
So, I sometimes like to by low-cost electronics...some would say junk...Usually these are a buck or two, sometimes less. They take a long time to arrive and I sometimes forget what and why I bought it in the frst place, but around now, they are like little holiday gifts...and better than fruitcake for the most part.

#### DrG

##### Active Member
Assuming it's not an actual 'buzzer', but just a 'speaker', then having it in the emitter allows you to operate it in an analogue fashion rather than a digital one.

If it's just a buzzer, then it's a crap design
See my post 11 - could it be designed for a passive piezo element but produced with an active one?