--- title: "Intruder Alarm Monitoring | SPS Technical" description: "24/7 monitoring for your business intruder alarms. 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[Home](/) 2. [Services](/services) 3. [Intruder Alarms](/services/intruder-alarms) 4. Monitoring [Back to intruder alarm systems](/services/intruder-alarms) Alarm Monitoring & Police Response # Intruder Alarm Monitoring — 24/7 ARC Monitoring with Police URN Response SSAIB-certified alarm monitoring with police URN, keyholder escalation and dual-path signalling to an Alarm Receiving Centre (ARC). [Installation](/services/intruder-alarms/installation)[Maintenance](/services/intruder-alarms/maintenance)[PSTN migration](/services/intruder-alarms/pstn-migration)[Monitoring](/services/intruder-alarms/monitoring) SPS Technical connects commercial intruder alarm systems to an Alarm Receiving Centre (ARC) for monitored response across Yorkshire, Lincolnshire and the Humber. As an SSAIB-certified installer, every system we commission is eligible for a police Unique Reference Number — the prerequisite for a Type A confirmed alarm response. Alarm signals are transmitted via dual-path IP and 4G signalling to EN50136, ensuring control room connection even if one path is disrupted. ## Why SSAIB Certification Matters for Monitoring Only intruder alarm systems installed and maintained by SSAIB or NSI-certified companies are eligible for a police Unique Reference Number. Without a URN, your monitoring centre cannot request a Type A police response to a confirmed alarm. Non-certified systems — including many sold by national consumer alarm companies — cannot offer genuine police response, regardless of how they market their monitoring service. Why certification matters Only intruder alarm systems installed and maintained by SSAIB or NSI-certified companies are eligible for a police Unique Reference Number. Without a URN, your monitoring centre cannot request a Type A police response to a confirmed alarm — meaning police attendance depends entirely on whether an officer happens to be available, not on a confirmed protocol. SPS Technical's SSAIB certification covers installation, maintenance and monitoring — so the chain from detection to response is complete and compliant. How it works ## How Monitored Alarm Response Works When a monitored intruder alarm activates, the sequence from detection to police response is well-defined — but it only works if every element in the chain is correctly in place. SSAIB-certified installation, current maintenance certification, dual-path signalling and a valid police URN are all required for a guaranteed Type A response. 1 Detection Detector activates, alarm panel triggers 2 Confirmation Second confirmation source verified (dual-zone, CCTV or audio) 3 ARC notification Signal transmitted via dual-path IP/4G to an Alarm Receiving Centre (ARC) 4 Response Keyholder contacted and/or police dispatched depending on confirmation type and URN status 5 Resolution Engineer dispatched for fault or reset as required Monitoring options ## Monitoring Options SPS Technical offers three levels of monitoring — from full police URN with Type A confirmed response for Grade 3 commercial systems, through to keyholder notification and bells-only with remote alert for lower-risk premises. The right option depends on your alarm grade, insurance requirements and the nature of your business. ### Monitored with police response (Type A) Grade 3 standard Dual-path IP/4G signalling to an Alarm Receiving Centre (ARC). Confirmed alarm triggers police URN response. Requires SSAIB-certified installation and current maintenance certificate. The standard for Grade 3 commercial systems. ### Monitored with keyholder response Grade 2 & above The ARC contacts nominated keyholders on alarm activation. No police URN required. Suitable for Grade 2 premises or sites where keyholder response is preferred. ### Bells-only with remote notification Low-risk premises Local sounder activation with app or SMS notification to nominated contacts. No ARC monitoring. Suitable for very low-risk premises or as a supplementary alert layer. ## Alarm Receiving Centre (ARC) Monitoring Alarm signals from SPS Technical-maintained systems are routed through an Alarm Receiving Centre (ARC). The ARC holds your system records, keyholder details and site-specific response protocols. Where SPS Security keyholding or mobile response is part of your arrangement, the ARC coordinates directly with SPS Security's response officers. ARC monitoring connection Alarm signals from SPS Technical-maintained systems are routed through an Alarm Receiving Centre (ARC). The ARC holds your system records, keyholder details and response protocols. When an alarm activates, operators have full context — not just a signal from an unknown system. Where SPS Security keyholding or mobile response is contracted, the ARC coordinates directly with SPS Security's response officers. 24/7 ARC monitoring Full system records on file Keyholder escalation protocols Police URN management Free Tool ### PSTN Switch-Off Risk Checker If your alarm is monitored, check whether your signalling path may be affected by the PSTN switch-off based on your postcode area and current signalling type. Takes 2 minutes — no account needed. Results are indicative only. [Use This Tool](/tools/pstn-checker) Knowledge Centre ## Related Technical Guides [View all guides](/news) [ ![SPS Technical engineer diagnosing a commercial intruder alarm fault](https://media.base44.com/images/public/6989f2350e53aab8836435e3/f7993aae0_generated_image.png) Technical Guide ### Emergency Intruder Alarm Repair and Maintenance: A Business Guide A practical guide to commercial intruder alarm faults, emergency repair, planned maintenance, signalling issues, system takeovers and reducing security downtime. 24 Aug 2026 Read ](/news/emergency-intruder-alarm-repair-maintenance)[ ![Commercial intruder alarm system installed in a UK business premises](https://media.base44.com/images/public/6989f2350e53aab8836435e3/bb9358a60_generated_image.png) Technical Guide ### Commercial Intruder Alarm Systems: A Business & Facilities Manager's Guide A practical guide for business owners and facilities managers on choosing a commercial intruder alarm, including risk, Grades 2 and 3, monitoring, police response, SSAIB certification, integration and lifecycle maintenance. 24 Aug 2026 Read ](/news/commercial-intruder-alarm-systems-guide) [View all guides](/news) ### Request an alarm monitoring quote SSAIB-certified monitoring through an ARC — police URN, keyholder response and 24/7 alarm monitoring. SPS Security keyholding and mobile response available where contracted. [Request a monitoring quote](/?section=contact&type=monitoring) ![SPS Technical](https://media.base44.com/images/public/6989f2350e53aab8836435e3/0ceea3d11_SPSTECHNICALLOGO.jpg) Commercial fire, CCTV, intruder alarm and access control systems — designed, installed, maintained and monitored across Yorkshire, Lincolnshire and the Humber. #### Services - [Fire Alarm Systems](/services/fire-alarms) - [CCTV Systems](/services/cctv) - [Intruder Alarm Systems](/services/intruder-alarms) - [Access Control Systems](/services/access-control) - [System Monitoring](/services/monitoring) - [Guarding & Patrols](/services/guarding-mobile-response-keyholding) - [Maintenance & Compliance](/services/maintenance) - [System Takeovers](/services/takeovers) - [All Services](/services) #### Company - [About SPS Technical](/about) - [Our Story](/about/our-story) - [How We Work](/about/how-we-work) - [Values & Ethos](/about/values-ethos) - [Accreditations & Compliance](/about/accreditations-compliance) - [Sustainability & Social Value](/about/sustainability-social-value) - [Careers](/careers) - [Contractor Support](/contractors) - [Guides](/resources) - [Tools & Resources](/tools) - [Locations & Coverage](/locations) - [Customer Feedback](/customer-feedback) #### Accreditations SSAIB BAFE ISO 9001 SafeContractor Constructionline © 2026 SPS Security Ltd. 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