Wireless Alarm System for House: A Complete Installation Guide
Published: May 14, 2026 by Roombanker Engineering Team
You arrive on site. Three floors, brick-and-concrete construction, a garden, and a detached garage. The customer wants a wireless alarm system for a house that covers every door, every ground-floor window, and provides motion detection in the main living areas — all without repeaters or cables running across baseboards.
This scenario repeats across thousands of residential installations every year in EMEA. The question is always the same: can one wireless alarm system for a house reach every sensor through three floors of European construction?
This guide walks through a real installation scenario using the Roombanker wireless alarm system for a house: the equipment list, the placement decisions, the pairing sequence, and the mistakes that cost time on site. The goal is a full installation in under 90 minutes with zero repeaters.
The Scenario: Installing a Wireless Alarm System for a 3-Floor Villa
The property is a 280 m² detached house in a suburban residential area. Construction is brick exterior walls with reinforced concrete floors. The layout:
• Ground floor: Entry hall, kitchen, living room, guest toilet, garden access via sliding door
• First floor: Three bedrooms, one bathroom, landing corridor
• Second floor (attic conversion): One bedroom, home office, storage room
• Outside: Garden (80 m²) with a detached garage at 20 meters from the house
The customer’s requirements: all external doors and ground-floor windows monitored, motion detection on the ground floor and first-floor landing, audible alarm on all three floors, and a panic button in the master bedroom.
Equipment Needed for a Wireless Alarm System for a House
Device | Quantity | Placement
|——–|———-|———–|
Roombanker Hub | 1 | Ground floor, central hallway closet (centralized for coverage)
Door/Window Magnetic Sensor | 6 | Main entry, rear door, garden sliding door, garage door, 2x ground-floor windows
PIR Motion Sensor (Indoor) | 4 | Ground floor: hallway + living room. First floor: landing. Second floor: landing
Indoor Alarm Siren | 2 | Ground floor hallway + first floor landing
Outdoor Alarm Siren | 1 | Front facade, under eaves
Panic Button | 1 | Master bedroom bedside
Alarm Keypad | 1 | Ground floor, near main entry
Keyfob | 2 | Customer set (one kept by entry, one in bedroom)
Total devices: 18 wireless devices on one hub.
Step-by-Step Installation
Step 1: Hub Placement (The Most Important Decision)
Place the Roombanker Hub in a central location on the ground floor. In this villa, the under-stairs closet in the entrance hallway is the ideal position — it is centrally located, ventilated, and unobtrusive.
Why: The RBF Protocol has an open-air range of 3,500 meters (2.17 miles), but the critical variable is path loss through building materials. Brick attenuates the signal by approximately 8-12 dB per wall, and reinforced concrete floors by 15-20 dB each. Placing the hub on the ground floor rather than in the attic reduces the number of floors the signal must penetrate to reach upper-level sensors by one.
For this three-floor house, the hub on the ground floor sends signals through two concrete floors to reach the attic sensors. With RBF’s link margin of approximately 35 dB above receiver sensitivity at that distance, the connection is stable.
Do not place the hub in the garage, a metal cabinet, or near large appliances (refrigerator, washing machine) — metal enclosure and electrical noise both reduce effective range.
Step 2: Door and Window Sensors — Entry Points First
Install Door/Window Magnetic Sensors on all external entry points before interior sensors. This sequence ensures the perimeter is covered first.
Mount the sensor body on the door frame and the magnet on the door itself, aligned within 15 mm of each other at rest. For the sliding garden door, mount the sensor on the fixed frame and the magnet on the sliding panel.
Use the 3M adhesive backing included with the Roombaker sensor. No drilling required. Each sensor takes under two minutes to mount.
Why: Most burglaries occur through doors and ground-floor windows. If time is limited, the perimeter is the priority. Installing these first also lets you verify hub range to the furthest perimeter point — in this case, the garage door at 20 meters from the house — before deploying interior devices.
Step 3: PIR Motion Sensors — Coverage Logic
Place PIR Motion Sensors to cover the primary traffic paths an intruder would use:
• Ground floor hallway: Positioned on the wall opposite the entry door, angled toward the living room entrance. This covers anyone entering from the front door or coming from the rear of the house.
• Living room: Corner-mounted, covering the garden sliding door approach and the main seating area. Pet immunity set to 25 kg — the customer has a 15 kg dog.
• First floor landing: At the top of the stairs, angled toward the bedroom corridor. This catches anyone who makes it past the ground floor.
• Second floor landing: On the wall facing the stairwell. Coverage extends to the storage room and home office entries.
Why: Layered detection means an intruder triggers multiple sensors moving through the house, reducing the chance of a missed event if one sensor has a blind spot. The 2-3 second reset time between PIR triggers also prevents false alarm cascades from a single movement.
Step 4: Sirens — Audible Deterrence
The Indoor Alarm Siren on the ground floor hallway activates immediately on any alarm event, creating immediate noise at the most likely entry point. A second Indoor Siren on the first floor landing ensures the alarm is audible in all bedrooms.
Mount the Outdoor Alarm Siren under the front eave, at least 2.5 meters above ground level to prevent tampering. Connect to the hub via RBF — it requires no wiring beyond the power connection.
Why: An audible alarm at 105 dB is the most effective immediate deterrent. Research consistently shows that burglars abandon attempts within 60 seconds of an audible alarm. The outdoor siren also alerts neighbors.
Step 5: Keypad, Keyfobs, and Panic Button
Mount the Alarm Keypad near the main entry door at standard switch height (1.4 meters). This is the primary arm/disarm interface for daily use.
Program two Keyfobs — one for the entryway (hung on a hook near the door) and one for the master bedroom. Configure the bedroom Keyfob for panic alarm activation (press and hold both buttons).
Place the Panic Button on the bedside table. Pair it to trigger instant alarm mode with ARC notification.
Why: In an emergency, reaching the keypad may not be possible. Multiple arming/disarming points reduce the friction that leads to residents leaving the system disarmed.
Step 6: Pairing via RB Link App
Pair devices to the Roombanker Hub using the RB Link mobile app. The app scans for unpaired devices within range and shows signal strength for each device before confirming the connection.
Pairing sequence: Hub first, then Keypad, then Keyfobs, then sensors grouped by floor (ground, first, second), then sirens, then Panic Button. This order ensures the control interface is operational before sensor pairing begins.
Total pairing time for 18 devices: approximately 10-12 minutes. The app confirms each connection with a signal strength indicator — aim for 3 bars or better on every device.
Common Pitfalls and How to Avoid Them
Pitfall 1: Mounting PIR Sensors Facing Windows
Placing a PIR sensor directly facing a large window causes false alarms from temperature changes — sunlight heating the glass, or outside heat sources triggering the sensor through the glass.
How to avoid: Mount PIR sensors on walls perpendicular to windows, not facing them. In the living room installation, angle the sensor toward the interior space, not the sliding door glass. The pet immunity algorithm handles pet-sized movement but does not compensate for direct thermal radiation through glass.
Pitfall 2: Placing the Hub in a Metal-Enclosed Space
The under-stairs closet is a good location unless the fuse box or wiring conduits are inside. Electrical panels create electromagnetic interference that reduces wireless range.
How to avoid: Before finalizing hub placement, hold the hub in position temporarily and check signal strength to the furthest sensor (in this case, the attic office). If signal is marginal, shift the hub to a nearby shelf or cabinet top — an elevation change of 1 meter can improve path loss by 3-5 dB.
Pitfall 3: Forgetting to Test the System Walk-Through
Installers sometimes complete all mounting and pairing and leave without testing the full alarm sequence. The customer discovers a coverage gap or a misconfigured sensor at 2 AM.
How to avoid: After pairing, arm the system and trigger each sensor one by one. Walk the full path an intruder would take — entry through the rear door, through the living room, up the stairs. Verify the app records each event and the sirens activate on alarm. This takes 15 minutes and catches 90% of installation issues.
Pitfall 4: Not Configuring User Codes on Site
Leaving the installer default code active means the customer cannot arm or disarm until they figure out the app. Some customers call back within hours.
How to avoid: During the walk-through, set the primary user PIN on the keypad, demonstrate arming/disarming with the Keyfob, and show the customer how to set additional user codes for family members. The app makes this a 2-minute setup. Do not leave without confirming the customer can arm and disarm the system independently.
What the Customer Experiences After Installation
The system arms with a single button press on the Keyfob or Keypad. The keypad beeps once to confirm arming and shows a green LED. All 18 sensors report to the hub within 1-2 seconds of activation.
When a Door/Window Sensor triggers, the hub sends a push notification via the RB Link app within 200 milliseconds. The Indoor Sirens activate at 105 dB on all three floors. The Outdoor Siren activates after a configurable delay — set to 30 seconds to allow the customer to disarm if it is their own entry.
The customer can view the full system status from the RB Link app: which sensors are open, battery levels for each device, and event history. Battery notifications begin at 15 percent remaining, giving the customer weeks of warning before replacement is needed.
For the installer, the total time on site is approximately 90 minutes — 60 minutes mounting and cabling, 15 minutes pairing and configuring, 15 minutes testing and customer handover. No repeaters. No cable runs. One hub covering three floors, garden, and garage.
What to verify on follow-up: After 30 days, check in with the customer to confirm the system has been arming consistently and no false alarms have occurred. The RB Link app logs show event history and signal strength trends. If a device shows intermittent connectivity, it may need repositioning — most often a PIR sensor too close to a heat source or a Door/Window sensor with alignment drift.
Wireless Alarm System for House: FAQs
How many sensors can a single Roombanker Hub support?
Up to 128 wireless devices. For a typical single-family house, 15-25 sensors (door/window, PIR, smoke, siren, keypad, keyfobs) leaves substantial expansion capacity for additional zones.
What happens if the Wi-Fi goes down?
The Roombanker Hub has cellular backup. Alarm signals and push notifications continue through the cellular connection. The RB Link app connects remotely via the cloud when on Wi-Fi or mobile data.
Can the system be expanded after initial installation?
Yes. Additional sensors pair through the RB Link app in under one minute each. No changes to the existing devices or wiring are needed.
*This installation guide reflects testing conducted on Roombanker systems with RBF Protocol firmware version 3.2 across 50 residential sites. Individual results depend on building construction, layout, and environmental conditions.*
Internal links: How RBF Achieves 3500m Range | Wireless Alarm Systems for Apartments: An Installer’s Guide
External link: EN 50131-2-2 Security Grade Requirements for PIR Detectors
CTA: Book a demo installation with your regional Roombanker distributor to see the RBF Protocol in action.