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    Granite Peak Alarm

    5.0 (6 reviews)
    Closed 8:30 am - 5:00 pm

    Services - Granite Peak Alarm

    Security monitoring services

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    Sentry Alarm Systems

    Sentry Alarm Systems

    5.0
    (1 review)

    I needed a new modem installed and John Serpa came to do the work. He did an outstanding job, took…read morehis time explaining exactly what was being done and worked hard to troubleshoot a few minor issues. He was sure to help me download and test the app, and checked all sensors for function, then finally updated my yard sign before departing... he was very professional and is clearly a person I can trust- THANK you, John and Sentry Alarm!

    From the owner: Sentry Alarm Systems, a 52 year old third generation family owned & operated UL listed full service…read morelife safety & private property protection service company providing sales, installation, service, inspections & monitoring 24 hours a day for our customers. Our business philosophy is to make the extra effort to treat each customer like part of the Sentry family. We do it right the 1st time with attention to detail, a continuing commitment to training & by utilizing the industry's most advanced, economically priced fire alarm, security, & Surveillance equipment. Taking care of our customers in the Monterey & Salinas areas in any way we can is what sets us apart. Our business is your life safety and the safety of your possessions while you are away. Keeping this in mind, we follow the old-fashioned code of attention to detail. We build trust so our customers rest much easier. We plan to continue our phenomenal growth by building on our foundation of integrity, competence & family values

    Mountain Alarm

    Mountain Alarm

    2.1
    (7 reviews)

    These people are bill shit I hired them to put in a system since when I bought the place it already…read morehad 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

    I ran a restaurant in Groveland. When i had financial difficulty and i couldn't pay my alarm bills,…read morethis 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.

    Granite Peak Alarm - securitysystems - Updated August 2026

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