Wouldn't I also need an outside bell on my home?

Outside bells can provide additional peace of mind, but there are also some drawbacks:

Outside bells often cause complaints from the neighbors, sometimes resulting in a noise citation.
If your bell goes off and neighbors do respond, they could be hurt by an intruder. When the police arrive, they may confuse a neighbor for a burglar.
So many bells go off these days, most people tend to ignore them. Also, bells are supposed to be programmed to shut off after 10 to 15 minutes.
A great alternative would be a latching strobe, a red or blue light on the front of your house that will begin to flash if your alarm is tripped. It is less expensive than a bell and will continue to flash until you physically turn it off on the control panel. This way, when you come home, you can look at the light and know whether a burglary has happened or not. It also makes the house a little easier for the police to find at night if they are responding to an alarm
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