Layered Security — Deter, Detect, Alert
A single smart lock secures one door. Layered security means combining detection sensors, alarms, and metal detectors to create multiple protective barriers around your property. When the perimeter sensor detects motion, the alarm sounds before the intruder reaches your door. When a metal detector at the gate identifies a weapon, security responds before entry.
HomeMax Smart supplies walk-through metal detectors, PIR motion sensors, door/window contact sensors, beam detectors, and complete alarm systems for homes, offices, schools, and commercial buildings across Pakistan.
Types of Security Products
Walk-Through Metal Detectors
The Walk-Through Metal Detector MD-300 (₨85,000) detects ferrous and non-ferrous metals on individuals passing through. 18 zone detection with adjustable sensitivity per zone. LED display shows exact metal location on the body. Used at school entrances, court buildings, event venues, and office lobbies. Throughput capacity 60 people per minute.
Handheld Metal Detectors
The Handheld Metal Detector Portable (₨4,500) is a lightweight wand for secondary screening. Detects small metal objects — knives, blades, scissors — within 15cm range. Battery operated with 40-hour continuous use. Ideal for security guards at event entrances, school gates, and building reception areas.
PIR Motion Sensors
The Tuya WiFi PIR Motion Sensor (₨1,800) detects human movement using passive infrared technology. 110-degree detection angle with 12-meter range. Sends instant phone alerts when motion is detected. Battery powered with 12-month battery life. Integrates with Tuya smart home system for triggering lights, cameras, or alarms.
Door and Window Contact Sensors
The Tuya WiFi Door Window Sensor (₨1,200) detects when a door or window opens. Magnetic contact design — two-piece sensor separates when the door opens, triggering an alert. Install on main doors, windows, cabinets, and gates. Battery powered with 18-month life. Pair with smart lights to automatically turn on when a door opens.
PIR and Microwave Dual Technology Detectors
The Dual Technology PIR Microwave Detector (₨6,500) combines PIR and microwave sensing to eliminate false alarms. Both technologies must detect motion simultaneously before triggering — reduces false alerts from pets, curtains, and air movement. Used in high-security areas where false alarms waste security resources.
Outdoor Beam Sensors
The Outdoor Infrared Beam Sensor 4-Beam (₨12,000) creates an invisible infrared fence across property boundaries. When an intruder breaks any beam, the alarm triggers instantly. 100-meter detection range, weather-resistant housing for Pakistani outdoor conditions. Perimeter security for farms, warehouses, and large compounds.
Complete Alarm System
The 8-Zone Wireless Alarm System (₨25,000) includes control panel, 4 PIR sensors, 2 door sensors, 1 siren, and 2 remote controls. Expandable to 32 zones. Arm/disarm from phone or remote. Built-in siren reaches 110dB. Battery backup for 8 hours during load-shedding.
Security Products — Product Comparison
| Product | Price | Detection Type | Range | Power | Best Use |
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| Tuya WiFi Door Window Sensor | Rs 1,200 | Magnetic contact | 2cm | Battery 18-month | Doors, windows, cabinets |
|---|---|---|---|---|---|
| Tuya WiFi PIR Motion Sensor | Rs 1,800 | Passive infrared | 12m | Battery 12-month | Room intrusion detection |
| Handheld Metal Detector Portable | Rs 4,500 | Magnetic field | 15cm | Battery 40-hour | Event screening |
| Dual Technology PIR Microwave Detector | Rs 6,500 | PIR + Microwave | 15m | Wired 12V | High-security areas |
| Outdoor Infrared Beam Sensor 4-Beam | Rs 12,000 | Infrared beam | 100m | Wired 12V | Perimeter security |
| 8-Zone Wireless Alarm System | Rs 25,000 | Multi-sensor | 100m wireless | Battery + AC | Complete home security |
| Walk-Through Metal Detector MD-300 | Rs 85,000 | Electromagnetic | 18 zones | Wired 220V | Building entrances |
Use Cases — Pakistan
School Security
- Walk-through metal detectors at main entrance screen all students
- Handheld detectors for secondary screening of flagged individuals
- Door sensors on restricted areas — principal office, server room
- PIR sensors in corridors after school hours for after-hours intrusion
Office Building Security
- Door sensors on main entrance and server room
- PIR sensors in corridors and parking areas after hours
- Complete alarm system with siren and phone alerts
- Metal detector at reception for visitor screening
Home Security
- Door sensors on main door, back door, and windows
- PIR sensors in living room, hallway, and backyard entrance
- Alarm system with phone alerts and siren
- Beam sensors for compound wall perimeter security
Warehouse and Factory Security
- Beam sensors across compound wall perimeter
- PIR sensors in loading areas and storage sections
- Door sensors on warehouse doors and office entry
- Metal detectors at worker entrance gates
Security Layering Strategy
| Layer | Product | Purpose | Cost |
|---|---|---|---|
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| Perimeter | Outdoor Beam Sensors | Detect intrusion at boundary | Rs 12,000 |
| Entry Point | Door Window Sensors | Detect door/window opening | Rs 1,200 per point |
| Interior | PIR Motion Sensors | Detect movement inside | Rs 1,800 per room |
| Screening | Metal Detector | Detect weapons at entry | Rs 4,500-85,000 |
| Response | Alarm System | Sound siren, send alerts | Rs 25,000 |
Pakistan-Specific Considerations
Load-Shedding — Security sensors must work during power outages. All our PIR and door sensors are battery-powered with 12-18 month life. Alarm systems include battery backup for 8+ hours. WiFi alerts continue as long as your router has UPS backup.
Monsoon Humidity — Outdoor sensors face 80-95% humidity during monsoon season. Our outdoor beam sensors and door sensors carry IP55+ ratings to handle moisture without false triggers. Install outdoor sensors under eaves where possible.
False Alarm Reduction — Pets, street animals, and power fluctuations cause false alarms in Pakistan. Dual-technology detectors (PIR + Microwave) reduce false alarms by 90% compared to single-technology sensors. Set detection sensitivity based on your specific environment.
WiFi Dependence — Smart sensors require WiFi for phone alerts. During internet outages, local alarm sirens still sound — alerts depend on connectivity. Consider hardwired sensors for high-security applications where WiFi reliability is a concern.
Frequently Asked Questions
Can security sensors work during load-shedding?
Yes. All our PIR sensors, door sensors, and alarm panels are battery-powered with backup lasting 12-18 months. WiFi alerts require internet connection — ensure your router has UPS backup for continuous remote notifications.
How many PIR sensors do I need for a 3-bedroom home?
Typically 4-6 PIR sensors: one in each bedroom entrance hallway, living room, and main corridor. Door sensors on 3-4 entry points. Total cost approximately Rs 10,000-15,000 for sensors, plus Rs 25,000 for alarm system.
Do walk-through metal detectors work outdoors?
Walk-through detectors are designed for indoor use at building entrances. For outdoor perimeter security, use outdoor beam sensors (Rs 12,000) or PIR sensors with weatherproof housings. Metal detectors require stable power and controlled environment for accurate detection.
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