Purchased this for my parents after purchasing one for myself as I was so impressed with it ... theirs could definitely do with an upgrade and I knew they wouldn’t be disappointed
This set came with 1 transmitters and 2 receivers so ones plugged in upstairs and one downstairs
Theres a button to change the chimes, volume (4 settings)
Also there’s a led indicator and of course a speaker
They have the volume of number 4 and it’s loud enough to hear from upstairs in quite a large house... the led indicator is great if you’re hard of hearing
Outside the unit is waterproof and needs one gentle touch to activate.. it can be attached to wall/door with sticky pad or screwed in
It really is very good!