Blutooth Low Energy (BLE)

Bluetooth-Based Indoor Positioning for Every Accuracy & Budget Need

Bluetooth Low Energy (BLE) enables scalable indoor tracking solutions for assets, people, and equipment. With two core positioning methods — Angle of Arrival (AoA) and Received Signal Strength Indicator (RSSI) — businesses can choose the right balance of accuracy, cost, and deployment complexity.

Whether you need sub-meter precision or cost-effective room-level tracking, BLE RTLS provides the flexibility to build the right solution for your operations.

Explore BLE Hardware

Overview — What is BLE?

BLE-based Real-Time Locating Systems (RTLS) use Bluetooth tags and gateways to track and monitor the real-time location of assets and people indoors.

There are two primary BLE positioning technologies:

1. BLE AoA (Angle of Arrival)

Uses antenna arrays to calculate the direction of signals and triangulate precise positions.

2. BLE RSSI (Received Signal Strength Indicator)

Uses signal strength to estimate proximity and approximate location.

Both technologies serve different operational needs — from high-precision manufacturing environments to cost-sensitive tracking applications.

How BLE Works

BLE tags broadcast signals at regular intervals. These signals are received by gateways installed across the facility.

In AoA, gateways calculate the angle of incoming signals to determine exact position.
In RSSI, gateways measure signal strength to estimate distance or zone presence.

The backend platform processes this data to provide real-time location visibility, alerts, and analytics.

BLE Technology Types

BLE AoA — High Precision Tracking

Sub-meter accuracy (≈ 1 meter)
Uses antenna-array locators
Ideal for real-time positioning and movement tracking

BLE RSSI — Cost-Effective Tracking

Room/zone level detection
Uses standard BLE gateways
Ideal for zone-based tracking and presence detection

BLE AoA vs BLE RSSI — Quick Comparison

Feature	BLE AoA	BLE RSSI
Accuracy	~1 meter	Zone level detection
Cost	Medium	Low
Use Case	Real-time precise tracking	Zone/proximity tracking
Best For	Manufacturing, Industrial	Healthcare, Offices

Use Cases of BLE AoA

Industrial & Manufacturing

Tool Tracking
MHE Tracking (Forklifts, BOPT, HOPT)
FG & WIP Tracking
Equipment Tracking

Healthcare & Facilities

Patient Tracking
Nurse & Staff Tracking
Wheelchair / Equipment Tracking
Emergency Response

Safety & Compliance

Restricted Zone Alerts
SOS & Emergency Alerts
Movement History & Audit Logs
Fixed Asset Tracking

Workplace & Enterprise

Employee Tracking
Visitor Management
Zone Presence Monitoring

BLE Hardware

VTS-G25 Locator

Product Size
180.7 × 180.7 × 40.7 mm
Positioning Accuracy
1 – 1.5 meter
Power Supply
PoE; DC (12–30V, 1A)
Operating Temperature
-20°C to +60°C
Maximum Installation Height
10 meters
IP Protection
IP66

VTS-M2 Asset Tag

Product Size
70mm × 46mm × 21mm
Wireless Protocol
Bluetooth 4.2
Battery Type
Replaceable (1000mAh)
Battery Life
3 Years
Operating Temperature
-20 to + 60 C
IP Protection
IP67

VTS-M4 Pro Asset Tag

Product Size
42mm × 26mm × 6mm
Wireless Protocol
Bluetooth 5.1
Battery Type
Replaceable (220mAh)
Battery Life
1.5 years
Operating Temperature
-20 to + 60 C
IP Protection
IP67

VTS-H3B Person Tag

Product Size
70mm × 46mm × 21mm
Wireless Protocol
Bluetooth 4.2
Battery Type
Non -Replaceable (1000mAh)
Battery Life
4 years
Operating Temperature
-20 to + 60 C
IP Protection
IP67

VTS-W6 Person Tag

Product Size
48.9mm × 41.7mm × 12mm
Wireless Protocol
Bluetooth 4.2
Battery Type
Replaceable (220mAh)
Battery Life
14 Months
Operating Temperature
-20 to + 60 C
IP Protection
IP67

VTS-W3 Pro Person Tag

Product Size
40mm × 32mm × 10.3mm
Wireless Protocol
Bluetooth 4.2
Battery Type
Non -Replaceable (220mAh)
Battery Life
14 Months
Operating Temperature
-20 to + 60 C
IP Protection
IP67

VTS-M6 Tag

Product Size
97mm × 53.5mm × 28mm
Wireless Protocol
Bluetooth 5.1
IP Protection
IP67
Battery Life
10+ Years or 5 Years
Battery Type
Replaceable (5200mAh (Li-SOCI2) or 3200mAh (Alkaline) )
Operating Temperature
-20 C to 60 C (Li-SOCI2 battery),
0 C to 40 C (Alkaline battery)

VTS-GW3 Gateway

Product Size
120mm × 120mm × 22.5mm
Positioning Accuracy
2 – 4 meter
Power Supply
PoE; Micro USB 5V/1A
Operating Temperature
-30 to + 50 C
Installation
Horizontal, hanging on wall or ceiling
IP Protection
IP66

VTS-M1 Coin Tag

Product Size
30mm × 30mm × 8mm
Wireless Protocol
Bluetooth 5.0
Battery Type
Replaceable (220mAh)
Battery Life
1 Year ( Default Setting )
Operating Temperature
-20 to + 60 C
IP Protection
IP67

VTS-N2 Asset Tag

Product Size
51mm × 30.5mm × 3mm
Wireless Protocol
Bluetooth 5.0
Battery Type
Non-Replaceable (85mAh)
Battery Life
1 Years
Operating Temperature
-20 to + 60 C
IP Protection
IP67

VTS-W7 Medical Wristband

Product Size
32.4mm × 24.5mm × 4.5mm
Wireless Protocol
Bluetooth 5.0
Battery Type
Non-Replaceable (38mAh)
Battery Life
5 Months (Continuous Work)
Operating Temperature
-25 to + 55 C
IP Protection
IP67

Key Features of BLE RTLS

Flexible Accuracy

Choose between sub-meter precision (AoA) or room-level tracking (RSSI).

Scalable Deployment

Start small and expand across facilities without major infrastructure changes.

Energy Efficient

BLE tags offer long battery life, reducing maintenance effort.

Cost vs Performance Optimization

Deploy high-precision tracking only where needed and use RSSI elsewhere.

Versatile Applications

Supports industries from manufacturing and logistics to healthcare and corporate environments.

Industries Using BLE RTLS

BLE RTLS supports a wide range of industries:

We’re here to answer all your questions

Quick answers to questions you may have

Which is better for my use case — AoA or RSSI?

AoA is best for high-precision tracking (~1m), while RSSI is ideal for cost-effective, room-level tracking.

Can both technologies be used in the same deployment?

Yes, both can be combined — use AoA for critical zones and RSSI for wider coverage.

What accuracy can I expect in real environments?

AoA offers ~1–1.5m accuracy, while RSSI provides zone level detection accuracy, depending on setup.

How does BLE perform in metal-heavy environments?

BLE works well with proper planning; AoA handles interference better, while RSSI suits basic tracking.

What is the deployment cost and ROI?

RSSI is more affordable, AoA offers higher precision. ROI comes from efficiency, visibility, and reduced manual effort.

Get in Touch With Us

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