These people are bill shit I hired them to put in a system since when I bought the place it already had a system by them now they not only was taking the old system with them when they installed the new system, I had to ask them to leave it. charge me right away after I hired him due to. I didn't have Internet yet, but yet they were charging me monthly three months went by. I some financial wanted to finish installing other cameras ordered, but I told that I needed to wait until I sold the property yet they were charging me monthly and their fees for installation well one day the owner comes by. They rip everything out. Leave my wires hanging I asked them to installed the old system so it looks like my place doorbell because the old camera was a doorbell as well big hole on my the old camera wasn't didn't even install the camera or the doorbell. They just yanked everything out and left it like that, but yet I paid them monthly. They were charging me monthly service. Do not hire this company. This company is bullshit. they could not wait another month for me yet. They month, but they couldn't wait one more month for them to take the total and then finish installing two more cameras that I to install being a family business. they're very inconsiderate. They should've took their money when I asked them to, and I was not them when I do hire someone to put a security system in my very very inconsiderate and very rude not to put back what they took off.keep in mind the service was never working but I was being charged every month for three months and no refund just left with holes and no door bell read more

Mountain Alarm - Did not put old door bell on in front door for my door bell to at least ring very very rude - Security Systems Near Me - Sonora, California

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I ran a restaurant in Groveland. When i had financial difficulty and i couldn't pay my alarm bills, this company sued me for about $200 in past payments. I ended up paying them that bill out of my own personal account with what little money i had in my bank account because i was going through my divorce and in the process of losing my business. In retrospect, i should've gave them the finger since i ended up filing bankruptcy anyways. I will never forget how these people treated me as a customer over 10yrs. if i can give them negative stars, i would. read more

I have a vacation home in Twain Harte and have had great service for 30 years, but today was exceptional. Tom Jr. came out for a routine system check and to replace an old sensor. The extensive system was wired by another company when the house was built and he took the time to explain to me about the many zones of protection and how the were controlled by the keypads. The routine service turned into twice the expected time, yet he continued working as he knew I had to return to the Bay Area. Service above and beyond. As I do, I checked to see if others had Yelped Mountain Alarm and couldn't believe the only negative review. CATS, he must not have been listening when the keypad functions were explained. If he had, he would have learned that he could have programmed the infrared to simply be bypassed and still have perimeter doors and windows securely protected. Any combination of zones can be grouped into the program to be bypassed with one key while exiting the house. I am very happy to be a long time client of Mountain Alarm, and today's experience proved I made the right choice. read more

I MISS Mountain Alarm since they were bought by Sentry. It's so impersonal now and the family and staff at mountain alarm were outstanding in their customer service and responsiveness to everything from billing to service calls to general questions. I do not know what these other people are talking about but I'm sorry for their experience. I've got nothing but good things to say and I just wanted to thank you for taking care of me so well before you sold. If Tom Jr. weren't still on staff with Sentry I would definitely leave and move to a local alarm company. read more

Horrid customer service. The new office manager (Jaclyn) seems to have taken on the owner's (Tom Sr.) bad, nasty attitude toward customers. I haven't been happy with their service for several months. My alarm kept going off for no reason, I repeatedly called and requested something be done. Now, they've reset the system to be almost worthless if anyone does break in. Not sure they know what they're doing. It's time to move on to a quality company who appreciates customers and knows how to treat them. read more

Had my alarm system installed recently, as I'm not home for very much time during the day usually, and there are an awful lot of people from out of town that drive through my area. I figured that it would help me feel more secure about my home while I'm away. Well, my cats set off the motion detectors. Constantly. I told them that I wanted it to not alert for the cats, and they said "of course, that's no trouble at all," but they can't seem to get it right. They've been out to my house twice now, and this time the installer was a total jerk about it. He seemed irritated when he entered my home, and kept asking me why I wouldn't just use the perimeter setting so that the cats wouldn't trip the detectors? If that's the case, why did they sell me the motion sensors (which happened to be the most expensive parts) in the first place, when I told them that I would have animals in the house all the time? I wish I could adjust it myself, because they're not coming out to my house for free. I know I'm out of the way for them and all, but a malfunctioning recent install shouldn't be subject to the normal service call (they say that their system isn't malfunctioning, but rather that I'm not using it correctly, and that's why I have to pay for them to show up.) Anyways, I'm just going to box their system up and send it back to them so that I don't get dinged for another call to have it removed. read more

Had seen their signs around. Wanted a local company to work with, but unfortunately they said they were experiencing a backlog and couldn't service the estimate. Sort of surprised me that they couldn't do an estimate. I ended up going with a self install wireless system with cellular dialer that was pretty dang easy to install. Shopping for IP addressable cameras next. read more