DetectAll Security took over my alarm system over 20 years ago when Kask/Honeywell went out of business. Over the years I've had them update my security system to include added zones, updated pads, monitored heat and smoke detectors, motion detectors, glass breakage and wireless devices.
With the increase of home invasions in Oakland, I recently had them review/improve all of my security systems and install a camera system. This company is actually headquartered in Oakland and owned/managed by the same family for many years. I have come to know the owner, Rick Quintero, and many of the employees well over the years and they have been responsive as well as respectful of me, my feelings of safety, my budget and my home (their installations are very neat). They will also spend quality time educating you on your systems and, as in the case of my camera system, return multiple times until it was perfectly adjusted and me educated!
You can rely on them for quality products and installation, monitoring, maintenance and response time as well as know you are choosing a company with long-time employees who can be trusted.