LIGO BLE ADAPTER Datasheet

Product Overview

LIGO BLE Adapter is an intelligent communication and integration module designed to enable seamless connectivity between wireless fuel level sensors (BLE) and GPS/telematics devices that do not natively support BLE communication.

Acting as a protocol bridge, LIGO Adapter allows existing GPS systems to integrate wireless fuel sensors without hardware modification or replacement, significantly reducing deployment and upgrading costs while enhancing system flexibility.

In addition to protocol conversion, LIGO Adapter functions as a SUM Data aggregator, capable of simultaneously connecting to 10 wireless fuel sensors and aggregating their data for transmission to the GPS device via standard wired interfaces such as RS232, RS485, and Analog/Frequency (AF).

To ensure reliable wireless performance in challenging environments, LIGO Adapter incorporates a BLE receive-path signal amplification mechanism, improving receiver sensitivity and extending the effective communication range of wireless fuel sensors. This feature is particularly beneficial in environments with high attenuation or electromagnetic interference, such as vehicle cabins, metal fuel tanks, and industrial machinery.

Key Features

LIGO Adapter is developed to achieve the following objectives:

• Allows GPS and telematics units without BLE capability to communicate with wireless fuel level sensors.
• Supports multiple wired communication interfaces — ensures broad compatibility with a wide range of GPS devices through RS232, RS485, and AF interfaces.
• Aggregates data from multiple sensors (SUM function) — supports simultaneous connection of up to 10 fuel level sensors, consolidating sensor data into a single communication channel to the GPS unit.
• Extends BLE communication range and reliability — enhances BLE reception through signal amplification, improving data stability and transmission distance in high-loss or noisy environments.

Applications

• Vehicle cabins with high RF attenuation.
• Metal fuel tanks where Bluetooth signal is heavily attenuated.
• Industrial machinery environments with electromagnetic interference.
• Telematics integrations with legacy GPS/tracking devices lacking native BLE support.
• Multi-sensor fuel monitoring installations requiring data aggregation (up to 10 sensors per Adapter).

Product Variants / Ordering Information

Three product variants are available, selectable based on the wired interface required by the GPS/telematics device:

Variant	Output Interface	Use Case
RS232	Digital (RS232)	GPS/telematics devices with RS232 input
RS485	Digital (RS485)	GPS/telematics devices with RS485 input
PRO AF	Analog & Digital (RS232/RS485 + Analog 1–8 V)	Mixed installations requiring both digital and analog output

Technical Specifications

No.	Parameter	RS232	RS485	PRO AF
1	Dimensions (without wire), mm	670 × 800
2	Output interface	Digital	Analog & Digital	Analog
3	Baud rate, bit/sec	2400, 4800, 9600, 19200, 38400, 57600, 115200
4	Power supply, VDC	7 – 36
5	Maximum power consumption	—
6	Power supply protection	—
7	Operating temperature, °C	—
8	Waterproof standard	—
9	Output value range	Digital (0–4095)	Digital (0–4095), Analog (1–8 V)	Analog (1–8 V)
10	Data output mode	SUM, AVERAGE
11	Bluetooth specs	—
12	Average service life, years (expected)	—

Note: Cells marked "—" were not specified in the source datasheet (LIGO BLE Adapter Datasheet V1.0). Contact manufacturer for confirmed values.

Wiring Description

Figure 1. Wiring diagram of LIGO BLE Adapter

Wire Colour	Function	Description
RED	VBAT	7 – 36 VDC
WHITE	AF	Analog output
BLACK	GND	GND
GREEN	RS485-B	RS485-B
YELLOW	RS485-A	RS485-A
BLACK	GND	GND
BROWN	RS232-Rx	RS232-Rx
BLUE	RS232-Tx	RS232-Tx

Compliance and Certifications

No certification or compliance information was provided in the source datasheet (LIGO BLE Adapter Datasheet V1.0). Refer to Product Certification & Approvals for current certificate status.

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