When it comes to protecting your home, business, or community space, a professionally installed intruder alarm system is one of the most effective deterrents against burglary and vandalism. But with so many options and technical terms, it’s natural to have questions. At OC Services, we believe in honest advice and clear answers. Here’s our comprehensive guide to the most common questions about intruder alarms.

Do I Need an Intruder Alarm System?

An intruder alarm is proven to reduce the risk of burglary, acting as both a deterrent and a rapid alert system if someone tries to break in. Most insurance companies recommend or require an alarm for higher-value properties and businesses. With rising crime rates, an alarm system is a smart investment for peace of mind.

What Legislation Applies to Intruder Alarms?

Intruder alarms in the UK must comply with British and European Standards (BS EN 50131), and may need to meet SSAIB or NSI certification for insurance and police response. If you want your alarm to be eligible for police response, it must be installed and maintained by an approved company like OC Services.

What Are Security Grades?

Alarm systems are graded from 1 to 4, depending on the level of risk:

Grade 1: Low risk (basic protection)
Grade 2: Moderate risk (most homes and small businesses)
Grade 3: Higher risk (larger businesses, valuable stock)
Grade 4: Highest risk (banks, high-security sites)

Most homes and small businesses require Grade 2 or 3. OC Services will assess your needs and recommend the right system.

What Are the Main Components of an Alarm System?

A typical intruder alarm includes:

Control panel: The system’s brain
Sensors: Detect movement, door/window opening, or glass breakage
Keypad: For arming/disarming
External/internal sirens: Sound the alert
Communication module: Notifies you, a monitoring centre, or the police

We design every system for full coverage and minimal false alarms.

What Types of Alarm Systems Are Available?

Wired Alarms: Reliable, ideal for new builds or major refurbishments.
Wireless Alarms: Quick to install, minimal disruption, perfect for existing homes or flats.
Hybrid Systems: Combine both for maximum flexibility.
Smart Alarms: Control your system via smartphone app, receive instant alerts, and integrate with other smart devices.

Can I Have a Wireless Alarm System?

Yes! Wireless alarms are now just as reliable as wired systems, with long battery life and secure signals. They’re ideal for properties where running cables is impractical.

Should I Choose a Monitored or Unmonitored System?

Monitored: Alerts a professional monitoring centre, who can contact you and the police if needed. Essential for businesses and high-value homes.
Unmonitored: Sounds a local siren only. Good for lower-risk or budget-conscious users.

OC Services can help you decide based on your needs.

How Important is Regular Maintenance?

Very important! Regular servicing ensures your system works when you need it, keeps you compliant with insurance, and extends the life of your equipment. We offer annual maintenance contracts and one-off servicing.

When Should I Arrange a Corrective Maintenance Visit?

If you notice false alarms, error messages, unresponsive sensors, or any system issues, book a corrective maintenance visit straight away. OC Services offers rapid response to keep you protected.

Can You Take Over My Existing System?

Yes! We can maintain, upgrade, or take over most major alarm brands—even if we didn’t install them originally. This includes providing monitoring and police response services if your system meets the necessary standards.

What Warranty Do I Get With OC Services?

All new installations come with a one-year parts and labour warranty, plus manufacturer warranties (typically 1–3 years). We’re proud of our low warranty claim rate and ongoing support for all clients.