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T. Nagar, Chennai - 600 017
Never be unsure about who’s at your door again. With Sentta Technologies’ Video Door Phone systems, you can see, hear, and talk to visitors before opening the door — whether you’re relaxing at home, busy in another room, or even away at work. It’s like having a reliable virtual assistant watching over your entrance, helping you keep unwanted visitors out while welcoming guests you trust.
Our video door phone system offer clear video quality, two-way audio communication, and remote door unlocking, all in one smart security system. Ideal for homes, apartments, villas, offices, and gated communities, these systems give you full control over access to your property. You’ll receive instant alerts when someone rings the bell, view them clearly on your indoor screen or smartphone, and decide how to respond — all without interrupting your day.
At Sentta Technologies, we provide everything from easy-to-use video door phones for individual homes to advanced multi-unit systems for apartments and commercial buildings. Our experienced team takes care of consultation, professional installation, and ongoing support to ensure smooth and reliable performance. Serving Chennai and across Tamil Nadu,also we’re committed to delivering smart, secure, and dependable Real time biometric machine solutions, Digital Doorlock systems, Home & Gate automation installation services you can trust.
Think of a video door phone as a smart doorbell with superpowers! It's a security device that lets you see who's at your door, talk to them through a speaker, and even unlock the door remotely – all without physically opening it. The system consists of an outdoor camera unit at your gate or entrance and an indoor screen (or your smartphone app) where you can view visitors. It's like having a security guard at your door who works around the clock, never takes a break, and costs far less!
Different homes and businesses have different needs. Here's our guide to help you choose:
Best for: Permanent homes, villas, standalone houses, and offices with long-term occupancy
Why choose this: The most reliable option with consistent video quality and no dependence on Wi-Fi. Physical cables connect your outdoor unit to the indoor screen, ensuring stable performance year after year.
Perfect if: You own your property and want a rock-solid system that won't fail when you need it most
Best for: Rental properties, apartments, quick installations, and tech-savvy users
Why choose this: Super easy to install without drilling holes or running cables. Works over your home Wi-Fi network and sends alerts straight to your smartphone. Many models run on rechargeable batteries.
Perfect if: You're renting, want quick setup, or frequently move locations
Best for: Modern homes, tech enthusiasts, and anyone wanting smartphone control
Why choose this: Access your door phone from anywhere using mobile apps. Features include motion detection alerts, cloud recording, face recognition, and integration with smart home systems like Alexa or Google Home.
Perfect if: You travel frequently or want cutting-edge smart features
Best for: Apartment complexes, gated communities, office buildings, and multi-tenant properties
Why choose this: One main panel at the building entrance connects to multiple indoor units. Visitors can select apartments from a directory, and residents can see who's at the main gate and buzz them in remotely.
Perfect if: You're managing an apartment complex or residential society
Best for: Older buildings with existing door phone wiring that needs modernization
Why choose this: Reuses your old cables while adding modern features like video, smartphone access, and HD recording. Saves money on rewiring costs.
Perfect if: You have an old audio-only intercom system that still has working cables
Look for at least 720p HD resolution so you can clearly see faces. Higher-end models offer Full HD (1080p) for even better clarity. Wide-angle lenses (around 140-180 degrees) capture more of your doorstep area.
Essential for seeing visitors after dark. Infrared (IR) LEDs illuminate the area without visible light, letting you see clearly even in complete darkness.
Speak clearly to your visitors through built-in speakers and microphones. Full-duplex audio (talk and listen simultaneously) works better than half-duplex (walkie-talkie style).
Get notified the moment someone approaches your door – even before they ring the bell. Smart systems can distinguish between people, vehicles, and animals.
Control your door lock or electric strike directly from the indoor monitor or your phone. Perfect for letting in trusted visitors when you're busy or away.
Capture images or videos of visitors for future reference. Storage options include SD card (in the device), local NVR/DVR units, or cloud backup services.
Outdoor units must withstand rain, heat, and dust. Look for IP65 or IP66 rating for Chennai's weather conditions.
Battery backup or UPS support ensures your system works during power cuts – exactly when security matters most!
Independent house or villa: Wired or Smart IP systems work best
Apartment (individual unit): Wireless doorbell or smart doorbell
Apartment building (society): Multi-unit intercom system
Office or commercial: Wired IP system with access control integration
If you travel frequently, work long hours, or simply want convenience, choose an IP system with mobile app support. You'll be able to answer your door from anywhere!
Have a main gate plus a front door? Look for systems that support multiple outdoor cameras with one indoor monitor.
If your Wi-Fi is unreliable, don't depend entirely on wireless systems. Wired systems work independently of your network.
New construction: Perfect time to install wired systems
Existing home: Wireless/Wi-Fi systems avoid messy cable work
Rental property: Wireless systems you can take with you
Want to connect with existing CCTV, access control cards, or smart home systems? Choose an IP-based system with open protocols.
Basic audio-video doorbells start affordably. Smart systems with advanced features cost more but add tremendous value. We offer solutions at every price point!
Modern video door phones have evolved far beyond simple doorbells. Here's what's possible today:
✓ Plan cable routing before wall finishing
✓ Use weatherproof junction boxes for outdoor connections
✓ Install surge protectors to prevent lightning damage
✓ Mount camera at 145-160 cm height for optimal face capture
✓ Choose metal housing for durability
✓ Avoid direct sun glare on the camera lens
✓ Ensure strong Wi-Fi signal at installation location
✓ Use a dedicated network or VLAN for security
✓ Enable WPA3 encryption if available
✓ Set strong passwords and change default credentials
✓ Keep firmware updated for security patches
✓ Plan battery charging routine if battery-powered
✓ Test video quality in both daylight and night conditions
✓ Verify two-way audio works clearly without echo
✓ Configure motion detection zones to avoid false alerts
✓ Set up backup power (UPS) for critical security
✓ Register product for warranty and support
✓ Position the camera to capture faces at eye level (145-160 cm height)
✓ Test audio quality in both directions before finalizing installation
✓ Keep the outdoor unit lens clean for clear video
✓ Use strong, unique passwords (never keep default passwords)
✓ Update firmware regularly for security and new features
✓ Connect to UPS or battery backup for uninterrupted operation
✓ Configure motion detection zones to avoid false alerts from passing traffic
✗ Mount the camera too high or too low – it won't capture faces properly
✗ Rely solely on Wi-Fi for critical security without a wired backup option
✗ Ignore software updates – they contain important security fixes
✗ Use cheap network equipment with IP systems – it causes connection issues
✗ Install outdoor units where they get direct harsh sunlight all day
✗ Forget to test the door unlock feature before finishing installation
✗ Share your system passwords or QR access codes publicly
In today's world, security isn't just about locks and keys anymore. Video door phones provide verified access control – you see exactly who's at your door before deciding to open it. This eliminates trust-based entry and replaces it with proof-based entry.
Whether it's screening unexpected visitors, monitoring deliveries, protecting elderly family members at home, or managing access to your business premises, a video door phone acts as your first line of defense. It's not just a convenience device – it's a serious security tool that pays for itself through peace of mind and protection.
At Sentta Technologies, we don't just sell products – we design complete access control solutions tailored to your specific needs. From consultation to installation to ongoing support, we're with you every step of the way.
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