AI-enabled unattended ground sensor system
Eyes where there are no wires.
Brihat Surveillance System detects and identifies people, vehicles and animals at remote perimeters — and alerts your control room over encrypted long-range radio. No internet. No SIM. No cables.
- Made in India
- Works fully offline
- AES-128 encrypted
- Licence-free band (within WPC G.S.R. 853(E) limits)
The problem
India's most sensitive perimeters are also its most remote.
Borders, forests, pipelines, rail lines, solar parks, mines, reservoirs, substations and highway stretches.
No power
Nothing to run cameras on, and laying cable over kilometres is slow and expensive.
No network
4G cameras stay silent exactly where they are needed.
Patrols can't be everywhere
Not all night, not every night, not along every kilometre.
Alarms that cry wolf
Wind, animals and heat trigger plain motion alarms, so guards start ignoring them.
Video leaving the organisation
Cloud systems send sensitive footage outside — unacceptable for many government and critical sites.
Brihat Surveillance System answers all five: it runs on battery, needs no network, watches 24×7, tells you what it saw — not just “movement” — and keeps every byte on your own premises.
How it works
Detect. Identify. Alert. In seconds.
01 · Detect
The post wakes on motion.
A camera post sleeps silently. The moment its motion sensor feels movement, it wakes up and immediately sends a Motion alert.
02 · Identify
On-board AI names what it sees.
03 · Alert
An encrypted alert reaches the control room.
On-board AI
It doesn't just see movement. It knows what moved.
Person
Someone on foot, day or night motion.
Vehicle
Cars, trucks, two-wheelers on a track or road.
Animal
So a stray dog is not treated like an intruder.
Face (known / unknown)
Matched against your own enrolled list.
Number plate
Read on the post, logged with the alert.
The film
The system in 72 seconds.
Drawn live in your browser, with captions. Scrub, pause, or jump to any scene.
BRIHAT SURVEILLANCE SYSTEM
Features
Built for places the grid forgot.
AI identification at the edge
Recognises people, vehicles, animals, faces (known / unknown) and number plates on the post itself — no server needed.
Works without internet or SIM
Long-range radio links posts to the control room directly. No telecom network, no data plan, no cloud.
Kilometres of reach
One control room covers posts spread over kilometres; actual range depends on terrain and antenna height and is confirmed by an on-site survey.
Off-grid, battery powered
No mains power or cabling at the post. Sleeps until motion, so the battery lasts.
Alerts in seconds
Motion is reported immediately; the AI result follows in seconds, with sound and a clear alert card.
Fewer false alarms
The system tells you what moved, so a stray dog is not treated like an intruder.
Encrypted and tamper-proof
Every message is encrypted (AES-128) and signed; forged or replayed messages are detected, blocked and reported as security events.
Your data stays with you
Alerts, photos, signal logs and reports are stored only on the control-room computer. Nothing leaves your premises.
Health monitoring
Every post reports battery, signal strength and status; the control room is warned if a post goes silent or the receiver is unplugged.
Photo evidence
Each detection is saved as a photo on the post, linked to its alert, for review and records.
Range-test report built in
Before deployment, a guided range test produces a printable report of signal quality at each location.
Simple control-room software
Double-click application for Windows and Mac. Live alerts, post map and status, history search, CSV export, training mode.
Designed for Indian radio rules
Operates in the licence-free 865–867 MHz band within the limits of WPC G.S.R. 853(E), with automatic power control and airtime limits built in.
Made in India
Designed, built and supported by Brihat Infotech.
Control room
One screen. Every post. Every alert.
- Live alert queue with sound
- Post status — battery, signal, last heard
- Photo linked to each alert
- Searchable history and CSV export
- Range-test report
- Training mode for operators
- Runs on Windows and Mac, fully offline
Waiting for events…
Use cases
Who it protects.
Built for Indian security forces and critical sites — wherever a perimeter runs past the last cable and the last tower.
14 sectors shown
- Security forces
Central Armed Police & State Police
Remote camps, check-posts, forward areas and routes with no network. Early warning of people and vehicles approaching.
- Security forces
Border & coastal outposts
Long, unlit stretches between posts. Know what crossed and where, without laying cable.
- Environment
Forest & wildlife departments
Anti-poaching watch in reserves. Tell people from animals and alert rangers in real time.
- Transport
Railways & metro corridors
Trespass and theft on remote track, yards and relay huts.
- Energy
Oil & gas pipelines, refinery outer fences
Pilferage and intrusion along kilometres of right-of-way.
- Energy
Solar & wind parks, substations, towers
Cable and panel theft at unmanned sites.
- Infrastructure
Mines & quarries
Illegal entry and material theft on large, open sites.
- Infrastructure
Dams, reservoirs & canals
Unmanned perimeters and restricted zones.
- Infrastructure
Telecom towers & equipment shelters
Battery and equipment theft at remote shelters.
- Transport
Highways, expressways & toll plazas
Incident awareness on remote stretches, with vehicle and plate capture.
- Infrastructure
Construction & infrastructure projects
Night-time site security before power and network arrive.
- Enterprise
Campuses, PSUs, defence estates, industrial parks
Outer-perimeter watch without trenching for cables.
- Environment
Agriculture, farms & plantations
Trespass and animal intrusion alerts on large holdings.
- Enterprise
Temporary events & disaster zones
Rapid deployment where infrastructure is down.
Security & privacy
Your perimeter. Your data. Nobody else's.
End-to-end encrypted radio
AES-128 encryption with a message signature on every packet.
Forgery & replay protection
Every message carries a never-repeating counter; forged, altered or re-sent messages are rejected and shown to the operator as a security event.
Unique network keys per customer
Each installation gets its own keys, generated at handover.
Fully offline
No internet, no cloud, no third-party servers. The console can be viewed read-only on the local network if required.
On-premises data
Alerts, photos, logs and reports stay on your computer and export as CSV and printable reports.
Tamper awareness
The control room is alerted if a post stops reporting, its battery is low, or the receiver is disconnected.
Comparison
Why not just CCTV or 4G cameras?
Needs mains power & cabling
- CCTV
- Yes
- 4G / SIM cameras
- Power, usually
- Plain motion alarms
- Often
- Brihat Surveillance System
- No
Needs mobile network / internet
- CCTV
- Often
- 4G / SIM cameras
- Yes
- Plain motion alarms
- Sometimes
- Brihat Surveillance System
- No
Tells you what moved
- CCTV
- Needs a person watching / a server
- 4G / SIM cameras
- Sometimes, via cloud
- Plain motion alarms
- No
- Brihat Surveillance System
- Yes, on the post
Data leaves your premises
- CCTV
- Depends
- 4G / SIM cameras
- Yes (cloud)
- Plain motion alarms
- —
- Brihat Surveillance System
- Never
Recurring data / SIM costs
- CCTV
- —
- 4G / SIM cameras
- Yes
- Plain motion alarms
- —
- Brihat Surveillance System
- None
Encrypted, replay-proof link
- CCTV
- Varies
- 4G / SIM cameras
- Varies
- Plain motion alarms
- Rarely
- Brihat Surveillance System
- Yes
Deploy in hours at a remote site
- CCTV
- No
- 4G / SIM cameras
- Only where there is coverage
- Plain motion alarms
- Yes
- Brihat Surveillance System
- Yes
Deployment
From survey to secure in days.
- 1
Site survey & range test
Signal quality measured at each candidate location, with a printable report.
- 2
Plan post locations
Posts placed where the survey measured a clean signal.
- 3
Install posts & control room
Pole-mounted posts; receiver and antenna at the control room.
- 4
Unique keys & handover
Network keys generated for your installation alone.
- 5
Operator training
Operators trained on the console, including its training mode.
- 6
Support & AMC
Annual maintenance and key management.
System overview
What you get.
Camera Post
Weatherproof, pole-mounted unit with motion sensing, AI camera, long-range radio and its own rechargeable battery. Deploy as many as needed.
Control-Room Receiver
Compact unit connected to the control-room computer by USB, with an external antenna for the mast.
Brihat Station software
The control-room application for Windows and Mac: live alerts, post status, history, photos, range reports.
Services
Site survey & range test, installation, operator training, annual maintenance (AMC), network-key management.
Starter configuration: 2 camera posts + 1 control-room receiver + software. Scales to more posts per receiver.
- things it recognises
- 5
- internet needed
- 0
- encrypted, signed, replay-protected
- AES-128
- licence-free band
- 865–867 MHz
- watch, sleeping between events
- 24×7
- default heartbeat interval
- 30 min
Compliance
Compliance & procurement
- Made in India
- Within WPC G.S.R. 853(E) limits
- Fully offline
- GeM procurement supported
- Operates in India's licence-free 865–867 MHz band within the limits of WPC G.S.R. 853(E), with automatic transmit-power control and airtime limits built into the firmware.
- Designed and made in India by Brihat Infotech.
- Government procurement through GeM supported.
- Built for Indian security forces and critical infrastructure.
Pricing
Pricing for bulk deployments.
Every deployment is sized to the site — how many posts, how far apart, how busy the perimeter is. So every quote is written for your site after a conversation with our sales team.
Direct purchase, GeM or tender — tell us your procurement route in the form.
A quote covers
- Camera posts, sized to your perimeter
- Control-room receiver and mast antenna
- Brihat Station software (Windows / Mac)
- Site survey, range test and installation
- Operator training and network-key handover
- Annual maintenance (AMC)
Want to see it first? A pilot runs 2 camera posts, 1 control-room receiver and the software at your site.
FAQ
Questions buyers ask.
See it in action at your site.
Book a live demo or an on-site range survey.
Or reach us directly: hello@brihatinfotech.com · +91 62021 26679