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  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon12
    Verified home security system services reviews

Find Home security system pros in Greenland

Avatar for ADT

ADT

3750 Priority Way South Dr
4.52(
727
)
Approved Pro

ADT

3750 Priority Way South Dr
4.52(
727
)
Approved Pro
Customers say: Terrific value
3694 local quotes requested
151 years of experience

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"The alarm, when it goes off, is very loud!!! This is a good thing. If we ever need to activate it, it will definitely scare off anyone trying to come into our home. We can set it off from our phone or from the keyboard control panel that we installed in our bedroom. We feel very safe with this purchase."

Chris L on September 2025

ADT home security systems are backed by more than 145 years of experience. As the leader in home security, ADT can help you customize a home security system with easy-to-use equipment and special security features to meet your safety needs. We have service centers nationwide that can install an ADT home security system within 24 hours in most areas. Once your home is equipped with our top-of-the-line system, it is connected to a network of ADT Monitoring Centers nationwide which deliver non-stop security monitoring 365 days a year. All of our installation technicians are internal employees, and not third-party contractors. You can count on your Security Advisor to take the time to set up your system properly, help you understand how the system works, and help make sure your home and family are thoroughly protected.

"The alarm, when it goes off, is very loud!!! This is a good thing. If we ever need to activate it, it will definitely scare off anyone trying to come into our home. We can set it off from our phone or from the keyboard control panel that we installed in our bedroom. We feel very safe with this purchase."

Chris L on September 2025


Avatar for SafeStreets - ADT Authorized Provider

SafeStreets - ADT Authorized Provider

615 N 150 E
4.88(
289
)
Approved Pro

SafeStreets - ADT Authorized Provider

615 N 150 E
4.88(
289
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
89 local quotes requested

For 140 years, ADT has been the leading home security provider in the country. SafeStreets, ADT's Authorized Provider, sells and installs ADT-monitored home security systems. Our team consists of 300+ trained consultants, covering more than 90% of the United States across 44 states. We are experts on the latest smart-home technology, and highly focused on giving all customers a 5-Star Experience™. SafeStreets is committed to bringing high-tech security equipment, backed by 24/7 professional monitoring, to the place that matters most - your home. We have same day and next day appointments available, all scheduled within a one hour window. Call us anytime for a custom home security assessment and free quote! Comprehensive Security System ADT 24/7 Monitoring Touch Screen Control Panel Motion Detectors, Glass Break Sensors, & Point-of-Entry Sensors Indoor, Outdoor, & Doorbell Cameras Smart Home Automation Smoke, Carbon Monoxide, & Flood Sensors Mobile App Control Cellular Connection Back-up Battery Supply Maintenance/Extended Warranty Homeowners Insurance Certificate Theft Protection Guarantee

"I’ve had nothing but problems with SafeStreets. The installation was a mess—took hours longer than promised, and the technician seemed clueless about the system. When I called customer service, they were rude and unhelpful. The security system itself is glitchy and keeps going offline. Definitely not worth the hassle."

Gino F on September 2025

For 140 years, ADT has been the leading home security provider in the country. SafeStreets, ADT's Authorized Provider, sells and installs ADT-monitored home security systems. Our team consists of 300+ trained consultants, covering more than 90% of the United States across 44 states. We are experts on the latest smart-home technology, and highly focused on giving all customers a 5-Star Experience™. SafeStreets is committed to bringing high-tech security equipment, backed by 24/7 professional monitoring, to the place that matters most - your home. We have same day and next day appointments available, all scheduled within a one hour window. Call us anytime for a custom home security assessment and free quote! Comprehensive Security System ADT 24/7 Monitoring Touch Screen Control Panel Motion Detectors, Glass Break Sensors, & Point-of-Entry Sensors Indoor, Outdoor, & Doorbell Cameras Smart Home Automation Smoke, Carbon Monoxide, & Flood Sensors Mobile App Control Cellular Connection Back-up Battery Supply Maintenance/Extended Warranty Homeowners Insurance Certificate Theft Protection Guarantee

"I’ve had nothing but problems with SafeStreets. The installation was a mess—took hours longer than promised, and the technician seemed clueless about the system. When I called customer service, they were rude and unhelpful. The security system itself is glitchy and keeps going offline. Definitely not worth the hassle."

Gino F on September 2025


Avatar for Robert Electrical Services

Robert Electrical Services

PO Box 1141
4.86(
159
)
Approved Pro

Robert Electrical Services

PO Box 1141
4.86(
159
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
25 local quotes requested

Martin Robert Electric Service is a family owned, full-service, electrical systems installation & repair company. With over 30 years of experience in both the electrical and communications fields, we have the expertise to take on your next new construction, remodeling project, or emergency call. As an authorized Generac generator dealer, consult with us when considering emergency back-up power for your home or business facility. Include us as a member of your team of favored contractors when updating your kitchen, attic, basement level living space. Customer care is of the highest priority. We see satisfied customers as the "engine" driving future success. Maintaining good communications with you is our guarantee. Recent customer submitted reviews can be accessed through the "Testimonials" page at our website. Martin Robert Electric Service looks forward to working with you and promises competitive pricing on your next project. NH Lic. #8409M, Maine Lic. # MS60018611

"Marty was a pleasure to work with. He was extremely responsive and accomodating. We had lots of small random jobs to be done. He moved 2 electrical boxes for mounted ceiling lights so they would be centered. He installed recessed lighting in our basement stairwell. He fixed and added more outdoor outlets. He hard-wired and installed under cabinet lighting in our kitchen. He installed timers on the bathroom fan switch. He showed up on time when he said he would and was easy to reach when needed."

Leslie S on October 2021

Martin Robert Electric Service is a family owned, full-service, electrical systems installation & repair company. With over 30 years of experience in both the electrical and communications fields, we have the expertise to take on your next new construction, remodeling project, or emergency call. As an authorized Generac generator dealer, consult with us when considering emergency back-up power for your home or business facility. Include us as a member of your team of favored contractors when updating your kitchen, attic, basement level living space. Customer care is of the highest priority. We see satisfied customers as the "engine" driving future success. Maintaining good communications with you is our guarantee. Recent customer submitted reviews can be accessed through the "Testimonials" page at our website. Martin Robert Electric Service looks forward to working with you and promises competitive pricing on your next project. NH Lic. #8409M, Maine Lic. # MS60018611

"Marty was a pleasure to work with. He was extremely responsive and accomodating. We had lots of small random jobs to be done. He moved 2 electrical boxes for mounted ceiling lights so they would be centered. He installed recessed lighting in our basement stairwell. He fixed and added more outdoor outlets. He hard-wired and installed under cabinet lighting in our kitchen. He installed timers on the bathroom fan switch. He showed up on time when he said he would and was easy to reach when needed."

Leslie S on October 2021


Monitex Security, Inc.

670 Myrtle Avenue, Suite 6342
New on AngiNew on Angi
Approved Pro

Monitex Security, Inc.

670 Myrtle Avenue, Suite 6342
New on AngiNew on Angi
Approved Pro
8 years of experience
Free onsite estimate

We only provide Virtual Remote Guardian. We do not offer any other services. We offer over 20 years experience in the Security Services Industry. We've established a solid reputation in security projects for residential homes in the Lewisville and surrounding areas. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

We only provide Virtual Remote Guardian. We do not offer any other services. We offer over 20 years experience in the Security Services Industry. We've established a solid reputation in security projects for residential homes in the Lewisville and surrounding areas. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.


Avatar for Services Butler

Services Butler

68 Beacon St
5.00(
1
)
Approved Pro

Services Butler

68 Beacon St
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

We specialize in residential and Monitored Security & Automation. Options include: Remote Monitoring | Indoor & Outdoor Cameras | Camera Doorbells | Smart Locks. Our system is custom built to deter real threats our home security systems doesn't just record crime, they help prevent it. With outdoor security cameras that detect lurkers and scare them away, a doorbell camera that detects and protects packages, and smart locks, lighting, and security sensors—your home is always protected.

"Extremely efficient and professional!"

Mark K on June 2021

We specialize in residential and Monitored Security & Automation. Options include: Remote Monitoring | Indoor & Outdoor Cameras | Camera Doorbells | Smart Locks. Our system is custom built to deter real threats our home security systems doesn't just record crime, they help prevent it. With outdoor security cameras that detect lurkers and scare them away, a doorbell camera that detects and protects packages, and smart locks, lighting, and security sensors—your home is always protected.

"Extremely efficient and professional!"

Mark K on June 2021


Avatar for Geek To You Computer Repair and Technology Services

Geek To You Computer Repair and Technology Services

1037 Calef Hwy, Suite 100
4.71(
19
)
Approved Pro

Geek To You Computer Repair and Technology Services

1037 Calef Hwy, Suite 100
4.71(
19
)
Approved Pro
Customers say: Quick response
25 local quotes requested
14 years of experience

Geek to You Computer Services was founded 10+ years ago by local technician Rod Ricard. After working out of his house for a few years he decided to do both his wife and himself a favor by opening the first storefront location in Newmarket, NH. Years later we’re still around offering the best computer services in the area. With a focus on customer convenience, customer satisfaction, and trust, Geek to You Computer Services offers a nearly endless list of services for nearly any technological aspect of your life. Whether it’s as simple as a computer virus or speedup, or as complicated as a home theater installation or tricky hardware problem, Geek to You has your back. So stop in! Try something different.

"Excellent explaining the job process and type of camera system to meet my requirements. Excellent with maintaining communications and coordination of installation date."

Tim M on September 2023

Geek to You Computer Services was founded 10+ years ago by local technician Rod Ricard. After working out of his house for a few years he decided to do both his wife and himself a favor by opening the first storefront location in Newmarket, NH. Years later we’re still around offering the best computer services in the area. With a focus on customer convenience, customer satisfaction, and trust, Geek to You Computer Services offers a nearly endless list of services for nearly any technological aspect of your life. Whether it’s as simple as a computer virus or speedup, or as complicated as a home theater installation or tricky hardware problem, Geek to You has your back. So stop in! Try something different.

"Excellent explaining the job process and type of camera system to meet my requirements. Excellent with maintaining communications and coordination of installation date."

Tim M on September 2023


Necc.Tech

Forest St
No reviews yet

Necc.Tech

Forest St
No reviews yet
3 years of experience

NECC TECH is a total solutions provider who specializes in integrated security, telecom, IT and cabling. We have over 20 years of experience and a dedicated team of experts who can build the perfect solution for your business needs. We started as two friends with one vision. Thomas and Elias teamed up, combining their technical expertise in engineering and programming, to create a much-needed service in the New England area. "Reliable, Honest, and Professional" is their motto, and they strive to live up to it.

NECC TECH is a total solutions provider who specializes in integrated security, telecom, IT and cabling. We have over 20 years of experience and a dedicated team of experts who can build the perfect solution for your business needs. We started as two friends with one vision. Thomas and Elias teamed up, combining their technical expertise in engineering and programming, to create a much-needed service in the New England area. "Reliable, Honest, and Professional" is their motto, and they strive to live up to it.


Callahan Electric

76 Old Marsh Hill Road
5.00(
5
)

Callahan Electric

76 Old Marsh Hill Road
5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

New construction/ Remodels Kitchen and Bathrooms Pools and Spas Heating and cooling systems Whole House and Portable Generators Service upgrades and Panels changes Solar and Battery Systems EV Car Chargers

"Jerry was very communicative and explained everything very clearly. He arrived on time, completed the work quickly, and was affordable. Overall we are very happy with his service!"

Abbygail Z on January 2025

New construction/ Remodels Kitchen and Bathrooms Pools and Spas Heating and cooling systems Whole House and Portable Generators Service upgrades and Panels changes Solar and Battery Systems EV Car Chargers

"Jerry was very communicative and explained everything very clearly. He arrived on time, completed the work quickly, and was affordable. Overall we are very happy with his service!"

Abbygail Z on January 2025


United Front LLC

66 Taft Road
No reviews yet

United Front LLC

66 Taft Road
No reviews yet
Emergency services offered

United Front has two dedicated teams at your disposal. Our electrical team is ready for all major and minor electrical work for residential and commercial settings. From panel service upgrades all the way down to a new outlet. Our low voltage team is here for everything front cctv, access control, and anything smart hub, or home alarm. We strive to provide the highest quality work for a reasonable price. Contact us today to get your free quote and see what we mean !

United Front has two dedicated teams at your disposal. Our electrical team is ready for all major and minor electrical work for residential and commercial settings. From panel service upgrades all the way down to a new outlet. Our low voltage team is here for everything front cctv, access control, and anything smart hub, or home alarm. We strive to provide the highest quality work for a reasonable price. Contact us today to get your free quote and see what we mean !


Redwood Electric

Based In
5.00(
4
)

Redwood Electric

Based In
5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We specialize in electrical services, repairs, installs, lighting, panel upgrades, ceiling fans, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Very professional and reliable.work was done in a timely manner. Would hire again."

June M on February 2023

We specialize in electrical services, repairs, installs, lighting, panel upgrades, ceiling fans, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Very professional and reliable.work was done in a timely manner. Would hire again."

June M on February 2023

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Home Security Systems questions, answered by experts

Expect to spend an average of $150 to $500 to set up a home flood detection system. However, be aware that costs are wide-ranging. You might only spend a budget-friendly $50 to place basic, battery-operated sensors in a few key areas of your home, or $150 to set up two or three smart sensors. The purchase and professional installation of a whole-home protection system with water shutoff capabilities could cost between $500 and $1,000.

Costs depend on system type, labor rates, and additional features like smart integration or professional monitoring.

A keypad deadbolt, a lock requiring a code entered on a keypad entry, can be a convenient option for families with children coming in and out and needing access to the home. It can also offer an easy solution if you rent your home out, since you can easily change the code as needed. So, depending on your home entry’s needs, a keypad deadbolt may be worth the extra expense.

Understanding the pros and cons of installing a home security system is the first step to deciding which one is right for you. A few of the advantages and disadvantages include:

Pros

  • Added security for your household

  • Reduced home insurance premiums

  • Many smart home integrations available

  • Security companies can monitor your home 

Cons

  • Expensive setup costs 

  • Subscription costs can add up quickly

  • Features may be vulnerable to hackers

  • Weak signal reduces the security of a wireless system

The biggest downside to a wireless security camera is that it's 100% reliant on Wi-Fi to capture footage at your home. Even when Wi-Fi is reliable, the range for wireless cameras may only be 200 feet or less. Drywall, brick, and other materials in your home can be enough to make your signal lag.

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The Greenland, NH homeowners’ guide to home security system services

From average costs to expert advice, get all the answers you need to get your job done.