|Brand||Hampton Bay||Hampton Bay||Hampton Bay||Hampton Bay|
|Name||Wireless Battery Operated Door Bell Kit with 1-Push Button in White||Wireless Battery Operated Door Bell Kit with 1-Push Button in White||Wireless Plug-In Door Bell Kit with 1-Push Button in White||Wireless Illuminated Battery Door Bell Kit|
|Features||No Additional Features||No Additional Features||Westminster Bell||Hearing Impaired Indicator,Musical,Recordable,Westminster Bell|
|View Product||View Product||View Product||View Product|
Hi John, Up to 100 ft.
I don't see any reason why multiple units could not be used in an apartment complex.
C batteries and yes it is pushbutton
3 C cell batteries.
You shouldn't mount it sideways if it is going to be exposed to the elements, rain, snow etc. The spot that opens for the battery could get moisture inside.
About 6 months with normal use.
The included Instructions outline how to do this.
Roughly 4"x6" (Small photo frame).
Yes, I believe you can and it is quite easy to install.