-
T. Nagar, Chennai - 600 017
Sleep peacefully knowing your property is protected by a smart intrusion alarm system that reacts instantly to any threat. Sentta Technologies provides advanced intrusion alarm solutions from trusted brands like Ajax and Honeywell, designed to detect unauthorized entry the moment it happens. Using motion sensors, door and window contacts, glass break detectors, and intelligent control panels, these systems create a strong security layer around your property. When a breach is detected, the alarm sounds immediately, alerts are sent to your phone, and optional monitoring services can be notified — ensuring fast action when it matters most.
Our intrusion alarm systems bring together modern detection technology, wireless connectivity, and easy smartphone control into one reliable security solution. They are ideal for homes, villas, apartments, offices, shops, warehouses, banks, jewellery stores, and other high-security locations. With features such as pet-friendly sensors, panic buttons, zone-based monitoring, and tamper protection, you stay informed about every important activity — from doors opening to motion detected in protected areas. You can arm or disarm the system remotely, set schedules, receive real-time alerts, and even integrate it with CCTV cameras for complete security control.
At Sentta Technologies, we work with industry leaders like ajax burglar alarm, known for its advanced wireless technology, and Honeywell, a global name in dependable security systems. Our experienced team starts with a detailed security assessment, designs a solution tailored to your property, ensures clean and professional installation, and guides you through system usage for complete confidence. Serving Chennai and all of Tamil Nadu, also we are committed to delivering dependable intrusion protection systems, smart lock installation, video door phone installation, Home & Gate automation that keeps your property safe around,kindly reach us for more.
An intrusion alarm system (IAS), also called a burglar alarm, is an electronic security system designed to detect unauthorized entry into buildings, rooms, or protected areas. Think of it as an intelligent network of sensors that constantly monitors all entry points and protected spaces, instantly triggering alerts when security is breached. Unlike CCTV cameras that record evidence after the fact, intrusion alarms provide real-time detection and immediate response, often scaring off intruders before they can cause damage or theft. Modern systems combine multiple sensor types (motion detectors, door contacts, glass break sensors) with smart control panels that send instant alerts to your smartphone, trigger loud sirens, and optionally notify professional monitoring centers – all within seconds of detecting an intrusion!
Understanding the technology behind intrusion detection helps you appreciate why these systems are so effective:
Step 1 - Perimeter Protection: Door/window contacts and glass break detectors monitor all entry points. When a door opens or glass breaks, the magnetic circuit is broken or acoustic sensors detect the specific frequency of breaking glass, immediately triggering an alert.
Step 2 - Interior Protection: Passive infrared (PIR) motion sensors detect body heat and movement inside protected areas. Advanced dual-technology sensors combine PIR with microwave detection to eliminate false alarms from pets, curtains, or temperature changes.
Step 3 - Signal Processing: When a sensor detects intrusion, it sends a wireless or wired signal to the control panel within milliseconds. The panel evaluates the signal based on armed zones, programmed delays, and system settings.
Step 4 - Alert Activation: If the system is armed and the signal is genuine, multiple alerts trigger simultaneously: loud sirens (110-120dB) activate to scare intruders, smartphone push notifications are sent instantly, SMS alerts go to programmed numbers, and monitoring centers are notified if connected.
Step 5 - User Response: You receive the alert on your phone with zone information (which sensor triggered), live camera feed if integrated with CCTV, and options to disarm the system or confirm the alert to authorities.
Modern systems include entry/exit delays so you can arm the system and leave without triggering alarms. Stay mode allows perimeter protection while you're home with interior sensors bypassed. Duress codes let you silently alert authorities under threat. Two-way voice communication enables you to speak with monitoring centers or scare intruders remotely!
An intrusion alarm system is a coordinated network of devices working together to detect unauthorized activity, trigger alerts, and ensure timely response. Each component has a specific function, and system reliability depends on correct selection and placement.
The central intelligence of the system. It receives signals from all sensors, processes alarm logic, manages user access, activates sirens, and communicates alerts to mobile devices. Modern control panels include touchscreen interfaces, battery backup, and cellular or IP communication to remain operational during power or network failures.
Passive Infrared sensors detect human movement by identifying changes in body heat patterns. Typical coverage extends up to 12 meters. Pet-immune versions reduce false alarms, while dual-technology models combine PIR and microwave sensing for higher accuracy in demanding environments.
Magnetic sensors installed on doors, windows, and gate.Any unauthorized opening instantly triggers an alarm. Available in surface-mounted or concealed versions, these sensors form the first line of perimeter protection.
Acoustic sensors designed to recognize the unique frequency of breaking glass. They protect large glass areas without requiring individual contacts on each pane and typically cover a radius of up to 9 meters.
Weatherproof high-decibel sirens (110–120 dB) paired with flashing strobe lights. These devices provide immediate audible and visual alerts, deter intruders, and alert nearby occupants or neighbors. Tamper detection triggers alarms if interference is attempted.
Internal alerting devices that ensure alarms are heard throughout the premises. Loud indoor sirens create confusion for intruders while immediately notifying occupants of a security breach.
Wall-mounted interfaces used to arm, disarm, and manage the alarm system. Installed near entry and exit points for convenience. Multiple keypads can be configured with unique user codes and permission levels.
Wireless devices that allow quick arming and disarming without entering codes. Many include dedicated panic buttons for emergency alerts, making them ideal for elderly users, children,and staff.
Dedicated emergency triggers for medical, police, or fire alerts. Available as wall-mounted buttons or portable pendants. Configurable for silent or audible alarms depending on the situation.
Integrated fire detection sensors that activate alarms when smoke or abnormal temperature rise is detected. These detectors provide early warning and enhance life safety by combining intrusion and fire protection in a single system.
Sensors placed near water tanks, washing machines, pipelines, and HVAC systems. They detect leaks early and trigger alerts before major water damage or electrical hazards occur.
Communication modules that transmit alerts via internet or cellular networks. Dual-path communication ensures alarm notifications are delivered even if phone lines are cut or primary connectivity fails.
Different properties require different alarm configurations. Here's our comprehensive guide:
Best for: Existing buildings, rental properties, quick installations, retrofit projects
Why choose this: No cables needed between sensors and panel, installation in hours not days, easily expandable by adding sensors, portable if you move homes, clean aesthetic without visible wiring, and battery-powered sensors lasting 3-7 years.
Perfect if: You're in a finished building, want fast installation, need flexibility to add sensors later, or plan to relocate the system.
Technology: Ajax uses Jeweller radio protocol (1700m range, AES encryption). Honeywell uses secured wireless communication. Both feature two-way verification and anti-jamming protection.
Best for: New constructions, permanent installations, high-security facilities, large buildings
Why choose this: Maximum reliability with hardwired connections, no battery replacements needed, no wireless interference, lower long-term maintenance, and suitable for extremely large installations with 100+ zones.
Perfect if: You're building new or renovating, need maximum reliability, want zero battery maintenance, or have a very large facility requiring extensive zones.
Technology: Sensors connect to panel via twisted-pair cables. More complex installation but unbeatable reliability. Ideal for commercial and industrial applications.
Best for: Mixed requirements, expanding existing wired systems, maximum flexibility
Why choose this: Combines wired and wireless sensors in one system, use wired sensors where cables exist and wireless for new areas, best of both worlds for reliability and flexibility, easy expansion without additional wiring.
Perfect if: You have some existing wired sensors, need to expand without new cabling, want maximum flexibility, or have mixed security requirements across different building areas.
Single-technology PIR sensors are cost-effective but may have false alarms. Dual-technology sensors combining PIR and microwave provide near-zero false alarms. Pet-immune sensors use advanced algorithms to ignore animals up to 20-50kg. Choose based on your environment and false alarm tolerance.
Check the actual range in real-world conditions with walls and interference. Ajax Jeweller protocol offers 1700m open range (200-400m through walls). Standard 345MHz systems offer 100-200m range. Ensure signal repeaters are available for large properties.
Wireless sensors need periodic battery replacement. Look for systems with 5-7 year battery life using lithium cells. Low battery alerts should provide 30+ days notice. Calculate total battery replacement costs over 10 years when comparing systems.
Modern systems must offer robust mobile apps for iOS and Android. Essential features include real-time push notifications, remote arming/disarming, live system status, event history with timestamps, and user management. Photo verification adds tremendous value.
Wireless systems must use encrypted communication (minimum 128-bit AES). Look for two-way authentication, frequency hopping, and anti-jamming protection. Encrypted sensors prevent code-grabbing attacks and replay attacks by sophisticated intruders.
Start with your current needs but plan for expansion. Home systems typically need 8-16 zones. Businesses may need 32-100+ zones. Ensure the panel supports future expansion without complete system replacement.
Customizable delays let you arm the system and exit without triggering alarms. Typical settings: 30-60 second exit delay, 30-45 second entry delay. Different delays for different zones provide flexibility for front vs back entrances.
Professional systems should have dual-path communication: primary (Ethernet/Wi-Fi) and backup (cellular). If internet is down or wires are cut, cellular ensures alerts still reach you. Some systems offer triple-path communication for maximum reliability.
Control panels need battery backup lasting 12-24 hours during power outages. Rechargeable batteries automatically charge when power is available. Wireless sensors have internal batteries, but panel backup is crucial for system operation.
Look for systems that integrate with CCTV cameras for visual verification, smart locks for automatic locking when armed, lighting for deterrent effects, and home automation for comprehensive smart home control. Open protocols like Z-Wave enable extensive integration.
Walk around your property and identify all vulnerable points: main doors, back doors, windows accessible from ground level, glass sliding doors, garage entries, basement windows, skylights, and any other entry points. Count total entry points and rooms requiring motion detection. Consider outdoor perimeter protection for high-security needs.
Small homes (1-2 bedrooms): 4-8 zones sufficient (main entries + 1-2 motion sensors). Medium homes (3-4 bedrooms): 8-16 zones (all entries + multiple motion sensors). Large homes/villas: 16-32 zones (comprehensive coverage). Commercial: 32-100+ zones depending on size and layout.
Choose wireless if: existing building without conduits, quick installation needed (days vs weeks), rental property, or flexible expansion desired. Choose wired if: new construction with cable infrastructure, maximum reliability critical, very large installation (100+ zones), or zero battery maintenance preferred.
Basic home system: ₹25,000-50,000 (4-8 wireless zones). Standard home system: ₹50,000-1,00,000 (8-16 zones with smart features). Advanced home system: ₹1,00,000-2,00,000 (16-32 zones with camera integration). Commercial systems: ₹2,00,000-10,00,000+ depending on size and features. Include installation costs (15-25% of equipment cost).
Self-monitoring: You receive alerts and respond. No monthly fees. Requires you to be available. Professional monitoring: Security company receives alerts 24/7, verifies alarms, dispatches authorities. Monthly fee ₹500-2,000. Recommended for high-value properties, businesses, or when traveling frequently.
If you have or plan smart home devices (lights, locks, cameras, thermostats), choose a system with robust integration. Ajax integrates with major platforms. Honeywell Lyric includes Z-Wave. Consider future automation goals when selecting your system.
Pet owners must choose pet-immune sensors. Specify your pet's weight when configuring. Sensors handle pets up to 20kg (Ajax), 40kg (Honeywell), or 50kg (industrial-grade). Proper installation height and angle critical for pet immunity effectiveness.
Outdoor sensors need IP65+ weatherproofing for rain and dust. Temperature ratings matter: standard sensors work 0°C to 40°C, outdoor-rated work -25°C to +60°C. Coastal areas need corrosion-resistant housings. High-humidity areas benefit from sealed electronics.
Consider who will operate the system daily. Elderly users benefit from simple keypads or RFID tags. Tech-savvy users prefer smartphone control. Multiple family members need individual user codes. Guest codes with expiry dates useful for domestic help or temporary access.
DIY possible for: small wireless systems (under 8 zones), single-floor properties, tech-comfortable users. Professional installation recommended for: wired systems, multi-floor buildings, integration with CCTV/access control, commercial installations, or when warranty coverage requires professional install.
Motion sensors with integrated cameras (like Ajax MotionCam) capture photos when triggered and send them to your smartphone instantly. You see exactly what triggered the alarm before responding. Eliminates 90% of false alarm concerns and provides visual evidence for authorities.
System automatically arms when you leave home (using phone's GPS) and disarms when you return. No more forgetting to arm the system. Can integrate with smart lights to turn on when you arrive home. Requires smartphone app with location permissions.
Arm/disarm system using Alexa or Google Assistant voice commands. Check system status by asking. Hands-free control convenient when carrying groceries or children. Requires compatible system and linked smart home accounts.
Create custom arming modes: "Home" mode arms perimeter only, "Away" mode arms everything, "Night" mode arms doors/windows but not interior motion, "Vacation" mode includes randomized light activation. Switch modes based on lifestyle patterns.
When alarm triggers, system automatically displays camera feed from that zone on your phone. Combines intrusion detection with visual confirmation. Requires integration between alarm system and CCTV network. Premium feature offered by Ajax and Honeywell systems.
Beyond intrusion, monitor temperature (freeze alerts), humidity (mold prevention), flood/water leaks, smoke/fire, and carbon monoxide. Single system protects against multiple threats. Essential for vacation homes and rental properties monitored remotely.
Some control panels include microphones and speakers for two-way communication with monitoring centers or your smartphone. Can verbally warn intruders, communicate with family members, or allow monitoring centers to assess situations before dispatching police.
Link alarm system with electronic door locks, RFID readers, and biometric access. System automatically disarms when authorized RFID card is used. Logs who armed/disarmed and when. Perfect for businesses managing employee access.
✓ Install motion sensors in corners at 2-2.4m height for maximum coverage
✓ Aim motion sensors across pathways, not at walls or windows
✓ Keep PIR sensors away from heating vents, AC units, and direct sunlight
✓ Place door contacts on the fixed frame (magnet on moving door)
✓ Mount glass break detectors on walls facing windows within 9m range
✓ Position outdoor sensors away from plants, trees that might trigger false alarms
✓ Install control panel in secure location, not near main entrance
✓ Mount keypads at entry points at comfortable height (1.4-1.5m)
✓ Place outdoor sirens high (3m+) to prevent tampering
✓ Position cellular/IP communicators where signal strength is strongest
✓ Test wireless range before permanent installation
✓ Avoid mounting sensors on metal surfaces (interferes with signal)
✓ Keep sensors away from thick concrete walls that block signals
✓ Install signal repeaters for large properties or multi-story buildings
✓ Maintain line-of-sight where possible between sensors and hub
✓ Use included batteries from manufacturer for rated battery life
✓ Document sensor locations and battery replacement dates
✓ Test each sensor individually after installation
✓ Verify two-way communication between all devices and hub
✓ Use quality 22AWG or 18AWG shielded cable for sensor connections
✓ Run cables through conduit for protection and professional appearance
✓ Keep alarm cables separate from AC power lines (minimum 30cm)
✓ Use EOL (End-of-Line) resistors for tamper detection on each zone
✓ Label all wires at both panel and device ends
✓ Leave service loops (extra 30cm cable) at each sensor location
✓ Test continuity and resistance of each zone before panel programming
✓ Document zone numbers and corresponding sensor locations
✓ Install supervised zones for critical areas (tamper protection)
✓ Create strong master code (avoid simple patterns like 1234)
✓ Set appropriate entry/exit delays (30-60 seconds typical)
✓ Configure zone types correctly (instant, delay, 24-hour, fire)
✓ Program user codes for all family members or employees
✓ Set up notification contacts (phone numbers, email addresses)
✓ Configure arming schedules if needed (business hours)
✓ Enable cell backup and test communication paths
✓ Adjust sensor sensitivity if experiencing false alarms
✓ Create custom arming modes (home, away, night)
✓ Test entire system in all modes before going live
✓ Provide complete user training on arming/disarming procedures
✓ Demonstrate smartphone app features and remote access
✓ Explain false alarm prevention and response procedures
✓ Document all user codes, zone descriptions, and panel settings
✓ Schedule follow-up visit after 30 days for adjustments
✓ Provide emergency contact numbers for system support
✓ Register system with monitoring company if applicable
✓ Post alarm company signage and window decals as deterrent
✓ Test your entire system monthly by triggering sensors in test mode
✓ Replace sensor batteries promptly when low battery alerts appear
✓ Clean motion sensor lenses quarterly with soft cloth (dust affects range)
✓ Update user codes every 6-12 months for security
✓ Train all family members and employees on proper system operation
✓ Keep backup master codes in secure location (bank safe deposit)
✓ Document all system settings, user codes, and monitoring company contacts
✓ Install visible alarm signage and window decals as psychological deterrent
✓ Integrate with smart lights to simulate occupancy when away
✓ Subscribe to cellular backup even if you have internet (redundancy)
✓ Review event logs monthly to understand usage patterns
✓ Schedule annual professional system inspection and sensor testing
✗ Never share alarm codes with unknown service personnel or strangers
✗ Don't use obvious codes like birthdates, addresses, or 1234
✗ Never disable sensors or put tape over them "temporarily"
✗ Don't ignore low battery warnings - replace immediately
✗ Never leave spare keys near entry points or under doormats
✗ Don't advertise expensive purchases or vacation plans on social media
✗ Never bypass zones permanently - fix sensor issues properly
✗ Don't install motion sensors facing windows or glass doors (sunlight interference)
✗ Never mount wireless sensors on metal surfaces (blocks signals)
✗ Don't forget to notify monitoring company when going on vacation
✗ Never test real alarms without calling monitoring company first
✗ Don't place houseplants or decorations in front of motion sensors
✓ Create morning routine: disarm, check event log while having coffee
✓ Arm in "Stay" mode at night for perimeter protection while sleeping
✓ Use instant arming when leaving quickly (bypasses exit delay)
✓ Enable geofencing so system arms automatically when you leave
✓ Set up guest codes with expiry dates for temporary workers
✓ Integrate with smart locks for automatic locking when armed
✓ Program lights to turn on when alarm triggers (deterrent effect)
✓ Use panic buttons strategically placed near beds and exits
✓ Create duress code that silently alerts monitoring while appearing normal
✓ Review photos from MotionCam sensors to verify alerts before responding
In today's security landscape, intrusion alarm systems provide the critical first line of defense against break-ins and unauthorized entry. While CCTV cameras record evidence after the fact, alarm systems detect and respond to threats in real-time, often preventing crimes before they occur. The loud siren alone deters 90% of intruders, who typically abandon break-in attempts within 60 seconds of alarm activation. Combined with instant smartphone alerts, you're notified the moment something happens. The psychological benefit of knowing your property is protected 24/7 is invaluable - you sleep better, travel worry-free, and have peace of mind knowing your family, employees, and assets are safeguarded.
At Sentta Technologies, we don't just install alarm systems - we design comprehensive security solutions tailored to your specific risks and requirements. Our expert team conducts thorough security assessments, identifies vulnerabilities, recommends optimal sensor placement, designs custom protection zones, installs systems with meticulous attention to detail, and provides comprehensive training on operation and emergency procedures. From initial consultation to ongoing maintenance and support, we're your dedicated security partner ensuring your intrusion alarm system delivers flawless, reliable protection every single day.
Quick Email us
