Project Description


3 axes on 360°
Resolution : 0,005°

Temperature (internal or remote)

Range: -25°C to +70°C
Resolution : 0,6°C


Indoor or outdoor
Tilt monitoring for buildings, abutments or bridge piers, dams, engineering structures, earth structures…
Monitoring of movements on rails or catenary poles

Each sensor is autonomous; it doesn’t need another box nor a sending station


IoT, LoRa, LoRaWAN™
High capacity Li-ion cell
10,5cm x 10,5cm x 6cm
Operating temperature: -30°C to +85°C



Autonomous sensor equipped with MEMS probes measuring inclination changes with very high accuracy. They are useful, for example, to check the plumb of a tunnel, the slippage of an embankment, the heave or settlement of a railroad, or the movements of the piles and abutments of a bridge.

They can also be used to monitor railroad track movements or bending of catenary poles.

No installation constraints; flexible use with its 3 measuring axes.

Each sensor is autonomous; it does not need another box or a sending station


Monitoring in the fields of railroads, building, bridges, structures, monuments, natural risks or geology.


Measurement axes are clearly identified to ease installation.


Sensor can be delivered with mounting plates.

Magnetic holder also available.

Sensor characteristics
Data recording
Local measurement interval 1 second (via Bluetooth application)
Data reporting interval 20 minutes (configurable)
Reported data Angles (X, Y, Z)
Case temperature
Battery voltage
Motion probe
Measurement principle Mems
Measuring range 360°
Resolution 0,005° over ±10°
Repeatability 0,02°
Temperature sensor inside the housing
Measuring principle NTC
Measuring range -55 … +125°C
Resolution 0,6°C (-5 … +50°C)

Long distance radio
Radio technology LoRaWAN
Security AES-128 data encryption
Supported features LoRa private or operated, OTAA
Radio range Up to 15 km
Transmitted power Up to 20 dBm (adaptive)
Receiver sensitivity -142 dBm
Frequency band 868 MHz (EU), 915MHz (US, AS, AU)
Antenna Internal or external to the housing
Local radio
Radio technology Bluetooth Low Energy
Radio range Up to 40m
Transmitted power Up to 4 dBm
Receiver sensitivity -96 dBm
Frequency band 2.4 GHz ISM
Antenna Internal to the box

Power Supply
Battery type Lithium-Ion
Power consumption < 1mW
Battery life *
Measurement period Duration (up to)
20 minutes 5 years
30 minutes 10 years
1 hour 15 years

* Indicative duration, for use in the conditions of use

Operating temperature -30 … +85°C
Dimension 105 x 105 x 60 mm
Weight 280g
Internal memory 1024 measurements
Case Polycarbonate (weather, UV and impact resistant)
Decompressor against condensation
IP65, IK07
Fixing brackets

Order references
Order references
AIL 3-axis inclinometer
AIL-p25 3-axis inclinometer with 25mm probe
AIL-p50 3-axis inclinometer with 50mm probe
AIL-p25-ctn 3-axis inclinometer with 25mm probe and remote NTC
AIL-p50 3-axis inclinometer with 50mm probe and remote NTC
AIL-r25 3-axis inclinometer with 25mm ball-joints probe
AIL-r50 3-axis inclinometer with 50mm ball-joints probe
AIL-r25-ctn 3-axis inclinometer with 25mm ball-joints probe and remote NTC
AIL-r50 3-axis inclinometer with 50mm ball-joints probe and remote NTC
xxx-2pl with double mounting plate
xxx-mag with magnetic fixing plate

Other options : contact us


Specifications and information in this document are subject to change without notice.

A3IP products are not warranted or licensed for use as a critical component for medical or other life-saving or life-sustaining applications, or other applications where failure could reasonably be expected to cause serious injury, death, or damage to any structure, work or building.

In addition, devices are indications and decision aids and cannot be used in alarm or critical applications.


+33 (0)2 40 94 78 41

Bâtiment Placel
Route de Vannes