Hi,
Can you please advise if you knew of a buzzer/speaker that is really loud enough and yet small (4cm radius & 2.5cm height max) to get the attention of anyone working in a very noisy environment like the packing area (machine noise and everything) of a warehouse? I will be putting this on into a raspberry pi project that I have built, so power from GPIO or a step-up module will be considered.
Thank you!
Kind regards,
Allan