The Sensor Journal
Security Systemsguides.
CCTV, Ajax wireless alarms, digital door locks and video door phones.

Security Systems6 min read
CCTV vs Ajax Alarm System: Which Does Your Home Need First?
CCTV vs alarm system: learn what each one actually does, where each falls short, and which to install first in your Chennai or Tamil Nadu home.
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Security Systems5 min read
Ajax Wireless Security System for Indian Homes: Components, Coverage and Monitoring
Ajax security system India guide: hubs, sensors, sirens, coverage range and app monitoring explained for homes and villas in Chennai and Tamil Nadu.
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Security Systems5 min read
Home CCTV Setup Guide: How Many Cameras You Need and Where to Place Them
Home CCTV camera installation guide: how many cameras you need, where to place them, and how to choose DVR, NVR, PoE and storage for Indian homes.
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Security Systems4 min read
Digital Door Locks for Homes: Fingerprint, PIN and App Locks Compared
Choosing a digital door lock for home? Compare fingerprint, PIN, RFID card and app locks, plus door fit, batteries and emergency access in Indian homes.
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Security Systems5 min read
Video Door Phones Explained: Features, Types and How to Choose One
Video door phone guide: wired vs Wi-Fi models, indoor monitors, app calling, door lock release and how to pick one for your home or apartment.
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