45
can you see a beeper in this image?
(lemmy.ml)
For questions about component-level electronic circuits, tools and equipment.
1: Be nice.
2: Be on-topic (eg: Electronic, not electrical).
3: No commercial stuff, buying, selling or valuations.
4: Be safe.
I believe they are used in some emergency situations because they use less bandwidth than cellphones and will work when other services won’t.