Security Alarm Installation
Wiring and installation for burglar alarm systems, including door/window sensors, motion detectors, keypads, and monitoring.

Overview
A security alarm system only protects a property if its sensors, control panel, and power supply are wired correctly from the start. We install and wire intrusion alarm systems for homes and businesses, including door and window contact sensors, motion detectors, keypads and control panels, sirens, and the low-voltage wiring that connects them, along with the dedicated circuit and battery backup that keep the panel running through a power outage. Electrovoltage works with homeowners, retail and commercial property owners, and general contractors on new alarm installations, expansions to existing systems, and rewiring jobs where sensors or panels were installed with undersized wiring or no backup power.
- Door/window contacts, motion sensors & keypad wiring
- Dedicated circuit & battery backup for the control panel
- New installations & expansions to existing systems
We provide security alarm installation across Toronto and the GTA. Have a question first? Contact us or read more about our team.
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Panel-level surge protection to guard your home’s electronics and appliances.
Why It Matters
Most alarm system failures aren’t sensor failures, they’re power and wiring problems: a control panel plugged into a shared outlet with no dedicated circuit, a battery backup that was never sized to actually hold the panel over during an outage, or door and window contacts wired with cable that wasn’t rated for the run and starts giving false signals within a year. Monitoring is only as reliable as the connection behind it too, a cellular or landline dialer needs a stable power supply to report a break-in or a power outage. We wire the panel, sensors, and backup power correctly the first time so the system is actually there when it needs to be, not just installed and hoped to work.
How Security Alarm Installation Works
- 1
Site walkthrough & sensor planning
We review your property, identify entry points and areas to cover, and plan sensor and keypad placement against realistic wiring routes.
- 2
Power & panel planning
We size the dedicated circuit and battery backup for your control panel, and confirm what wiring the sensor count and monitoring connection require.
- 3
Wiring installation
We run new low-voltage wiring for door/window contacts, motion detectors, and sirens, or work with existing wiring where it’s in good condition.
- 4
Programming, testing & handover
We install and program the panel and keypads, test every sensor and the monitoring connection, and confirm backup power holds before we leave.
What Affects the Cost
Cost depends on the number of doors, windows, and motion zones being covered, how much new low-voltage wiring needs to be run and how accessible that route is, whether a dedicated circuit is needed for the control panel, and whether the job includes monitoring setup or integrates with an existing panel.
Where We Provide Security Alarm Installation
We install and repair security alarm installation for homes and businesses throughout the GTA. Pick your city for local details and to request a free quote:
Frequently Asked Questions
- Do you install the alarm system itself or just the wiring?
- We handle the full installation, sensors, keypads, control panel, and the wiring and dedicated power behind them, plus programming and testing before handover.
- Can you add sensors to an alarm system that already exists?
- Yes, we regularly extend existing systems, adding door, window, or motion sensors to spare panel zones, or upgrading the panel if the existing one doesn’t have capacity for more.
- Does the control panel need a dedicated circuit?
- It should. A control panel sharing a circuit with other loads is more likely to lose power unexpectedly, which is why we size a dedicated circuit and properly rated battery backup for every installation.
- What happens to my alarm system during a power outage?
- A correctly sized battery backup keeps the control panel, sensors, and monitoring connection running through an outage. We size backup power to your system rather than relying on whatever came in the box.
- Do you connect the system to a monitoring service?
- Yes, we wire and set up the panel to connect with cellular or landline monitoring services so break-ins and power issues are reported around the clock.
- How much does security alarm installation cost?
- Cost depends on the number of sensors and zones, how much new wiring needs to be run, and whether a dedicated circuit is needed for the panel. We provide a clear quote after reviewing your property.
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(416) 828-6976
