Hi, I needed 2 small buzzers for my 2 projects. First I did mistake and bought passive buzzer where I need PWM signal. Later I ordered two packages more, 5V and 12V but I mixed them up and they look the same. Here is a pic on how they look: https://ae01.alicdn.com/kf/HTB1itf_GVXXXXa_aXXXq6xXFXXXm/220878921/HTB1itf_GVXXXXa_aXXXq6xXFXXXm.jpg
So I wanted to test them, so took 1 of each and first connected it to 5V, hmm sound was the same on both so I connected to 12V and it was completely the same, then I tested rest of them and all the same on both 5 and 12 only the sound volume is higher at 12V. Does it mean that those small buzzers are all the same? Or eventually those 5V will burn when powered with 12V? or they are something like those bigger buzzzers 3V-25V?
Can I somehow distinguish them now?