How a video door phone works
A video door phone has a screen inside the premises and a camera unit outside the door. The screen shows the person at the entrance, helping you identify visitors before letting them in. This helps you avoid opening the door to unknown people and gives you more control over entry. Essatech supplies, installs and services video door phones in Hyderabad and Visakhapatnam.
Features that matter
Two-way communication lets you speak to the visitor. Once you identify the person, you can unlock the electric lock without leaving your chair. Features on the model we describe are:
- Colour TFT screen
- Sleek lock
- Electric lock release after identifying the visitor
- Two-way communication
- Advanced night vision camera
Where video door phones are used
Video door phones are used at entrances where occupants need to check visitors before opening the door. For other home and entry security needs, explore home automation systems and door access control:
- Family homes
- Apartments and residential complexes
- Companies and workplaces
Wired or Wi-Fi: which suits you
A wired system carries picture, sound and power over a few-core cable between the door unit and the screen, and it is the dependable choice for a new build or a renovation. A Wi-Fi model avoids the cable but depends on your network and a power source at the door. We recommend one after seeing your door, your wall and your router.
The cabling cost buyers forget
In a finished home or flat, the cost is not only the device. Running cable through walls means chiselling, patching and repainting, which can cost more than the door phone itself. If you are building or renovating, run the cable before the walls are closed. If the walls are already finished, we plan a route that causes the least damage, or advise a wireless unit instead.
What you get from Essatech
We install video door phones as a complete job:
- A site visit to check the door, the wall and the cable route
- A recommendation on wired or wireless, and the right screen size
- Supply and installation of the door unit, screen and lock release
- Testing of picture, sound, night vision and the lock
- Service visits and repairs afterwards
Apartments and multi-flat buildings
A block of flats needs a different design: one door unit at the gate, a screen in each flat and a way for security to see the same calls. We plan the cable risers and the unit count, and we can link the gate to door access control so residents can let guests in remotely.
Testing and upkeep
At each service visit we test the picture, sound, night vision and the lock release, clean the camera lens and check the cable joints and power supply. Outdoor units face rain and dust, so seals and fixings get a look too. Small faults found early cost far less than a replacement after the unit stops working.
For builders, architects, MEP consultants, corporates, industries, hospitals and defence
Builders and architects should plan the cable riser, the door unit recess and the screen position in the design, because a retrofit means chiselling finished walls. Commercial building owners use door phones at service entrances and offices, hospital owners at staff and records areas, and industries at stores and gates, usually linked to access control. MEP consultants can include door phone points in the services drawings. Corporates use them at executive suites and service entrances. Defence establishments, including Navy and Army residential and office blocks, can use them at entrances, and we quote within their security and vendor rules.
What decides the cost
The price of a video door phone job depends on:
- The number of screens and door units
- Screen size, picture quality and night vision
- Cable length and wall work
- Lock type and any link to access control
What to send us for a quote
Share these through the quote page or on WhatsApp:
- Photos of the door and the wall where the screen will sit
- The number of doors or flats
- Whether the building is new, occupied or being renovated
- Your location and the date you need the work done
Video door phones in Hyderabad and Visakhapatnam
We install door phones in homes, apartments and offices across both cities, and pair them with a burglar alarm system or CCTV cameras where you want more cover. Contact our offices to book a visit.
Talk to our local team
Share your location, type of building and what you need. We will suggest the right equipment and explain installation and maintenance.


