WiFi vs PoE vs 4G, storage, range and a certification checklist
A practical guide to choosing between WiFi, PoE and 4G CCTV cameras, sizing storage and bandwidth correctly, and confirming certification before you buy — written for Indian buyers evaluating options for a home, shop, office or industrial site.
WiFi: fastest to install, needs an existing 2.4GHz network in range
PoE: most reliable for permanent, multi-camera, new-build installations
4G: works with no local network at all, at the cost of a SIM data plan
Many sites mix connection types by area rather than standardising on one
Check phone WiFi signal strength at the mount point before buying
Confirm how many simultaneous camera connections your router/plan supports
microSD storage keeps footage local; cloud storage survives camera theft or damage
Size storage against your actual retention requirement, not a default assumption
Outdoor: confirm an IP-rating and surge/lightning protection, not just 'weatherproof'
Confirm IR night-vision range in metres against your actual coverage distance
Check the stated operating temperature range covers local summer conditions
Plain motion detection alerts on any movement, including irrelevant motion
Human/vehicle detection filters out most false alerts from plain motion
Ask what the 'AI' on a spec sheet actually distinguishes before buying
Ask for a live demonstration rather than relying on the spec sheet alone
BIS-ER registration is a legal requirement for CCTV sold in India since 1 April 2026
Verify the registration number on the BIS register — don't accept a claim on trust
Ask whether the VMS/app software carries its own separate certification
Use a free certificate verifier tool where the supplier offers one
Tell us about the location and we'll recommend WiFi, PoE or 4G based on what's actually there — not a generic default.
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