Can a hardwired security system be installed after drywall is in place?

I want to have a hard wired security system installed in a house that was built in 1993. I received an estimate from an alarm company with almost all wireless components. When I replied that I did not want the components to be visible on the windows they said you cannot install a hardwired system [...]

Fraudulent alarm company installed hardware on my phoneline how can I be sure it’s all removed?

I fell for a scam from a supposed GE Alarm system dealer, who promised a free system in exchange for “advertising” their product. Long story short, they installed the monitoring panel on my land line phone line and now won’t come get it out now that I’ve canceled. I’m sure they intend to come [...]

What could be the cause of false alarms in a home alarm system (installed by a company, not a do it yourself)?

No pets on the premises.

What questions should I ask an alarm company before having an alarm installed?

I am getting 4 estimates for an alarm installation and wondered what questions I should ask. Thanks for any suggestions.
This is for a home alarm

Can an alarm company use a previously installed home alarm system?

I have a previously installed Brinks home security system in my home (though I do not currently use any service). My fiance is moving in and she has a contract with a local alarm company. The local alarm company is telling me they may charge extra when we convert her service to my [...]