Smart Alarm Systems in East Grinstead and Beyond

Smart Alarm Systems from Castlegate Alarms give you interactive security that fits around your life. We design and install professional smart home security, combining alarms, cameras, doorbells and automation into one easy to use system. If you are looking for Smart alarm system installation in East Grinstead, Crawley, Brighton or Tunbridge Wells, we can customise a solution for your home and support it long term.


  • Local, owner operated smart alarm specialist
  • Professional systems, not DIY kits
  • App control, video, smoke and CO detection available

Call today to discuss your Smart Alarm Systems options or book online to choose a time that suits you.

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All In One Interactive Smart Home Security

Our Smart Home Security Alarm Systems are designed as all in one interactive security solutions. Let us get started on a system that brings together alarms, cameras and smart devices in one place.

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Total Protection

Everyone safe. Everything protected. Welcome home.

Always Connected Security and Safety

With our Smart Alarm Systems you can:

  • Arm and disarm with zone bypass
  • View real time system and zone status
  • View history, receive notifications and alerts


Always-on protection means your system connects everything in your home to help keep you safe and secure, 24 hours a day.

Connected smoke and CO2 detectors can alert you, and your optional monitoring service too, so you are warned quickly if there is a problem.

Smart Automation

Our Smart Alarm Systems in East Grinstead make everyday life easier with smart automation.

You can:

  • Combine steps to simplify your routine
  • Trigger devices, notifications or recordings when specific events occur
  • Set up actions when you leave or return home

Smart Video Cameras and Doorbell

Our smart systems support WiFi cameras and doorbells that offer:

  • Continuous local recording with event backups to the cloud
  • Two-way audio on supported cameras
  • Clear live views of doors, drives and outdoor areas

Manage Users and Home Control

Manage users with tailored access levels, letting you:

  • Add, edit and remove contacts
  • Control access codes and permissions


You also get complete smart control of:

  • Heating and thermostats
  • Lights and plugs
  • Garage doors and smart locks
  • Other supported home devices

Service Plans for Smart Alarm Systems

Our monthly service plans include support for:


  • Security
  • Automation
  • Video features
  • Doorbells
  • And more

Experiencing faults with your current system? We offer responsive repairs for all alarm makes and models, including legacy equipment that others may not support.

Common repairs include:


  • Dead keypads and control panel faults
  • Sensor and door contact issues
  • Tamper loop failures
  • Low battery or backup issues
  • System resets after power outages

We install and maintain:


Based in East Grinstead, we serve Crawley, Brighton, Tunbridge Wells, and nearby areas.


  • Trusted by local homeowners for over 15 years
  • Rated highly on Google
  • One-to-one service, no call centres
  • Reliable, tidy installations with honest advice


Our reviews speak for themselves. We’re known for prompt service, clear explanations, and alarms that work when you need them most.

Frequently Asked Questions

  • How often should I service my smart alarm system?

    Once a year is best to ensure all features, sensors and alerts work as expected.

  • Can you fix smart alarms installed by other companies?

    Yes. We service and repair systems even if we didn’t install them, as long as parts are available.

  • What if my system is outdated or unsupported?

    We’ll tell you honestly. If it can be repaired, we will fix it. If not, we’ll explain your options for switching to Smart Alarm Systems.