BWSENSING Dual Axis Wireless Lora Inclinometer (LR-WL300)

BWSENSING Dual Axis Wireless Lora Inclinometer (LR-WL300)

Inclinometers are used to measure tilt relative to gravity, typically expressed in degrees. Dual-axis devices measure inclination along two perpendicular axes, enabling detection of complex movements such as structural leaning, rotation, and slope deformation. In LoRa-based monitoring, a sensor transmits periodic measurements to a gateway, which forwards data to a server or application for dashboards, alarms, and long-term analysis. The LR-WL300 explicitly supports LoRa star networking and ultra-low-power operation modes suitable for battery installations. 

Design and Features

Rugged outdoor construction

The LR-WL300 is positioned as an industrial-grade, outdoor-oriented inclinometer and specifies an IP68 protection rating, indicating strong resistance to dust ingress and sustained immersion (as defined by the manufacturer’s product specification). 

A notable structural feature is a pressure-balancing valve (described as a distinctive “balanced pressure valve”), which is commonly used in sealed outdoor devices to reduce internal pressure differentials caused by temperature or altitude changes. 

Dual-axis measurement and device telemetry

The LR-WL300 measures inclination on two axes (listed as X-Y-Z orthogonal axes for reference) and also outputs temperature and battery voltage as additional telemetry, supporting diagnostics and power management. 

Low-power modes for field deployment

The device supports multiple power-saving behaviors, including automatic sleep, timed wake, and motion wake, which are used to extend battery life in monitoring deployments where measurements are periodic rather than continuous. 

Technology and Specifications

Measurement performance (as specified)

Key measurement and performance specifications published for the LR-WL300 include:

• Measurement range: ±90° 

• Accuracy (room temperature): 0.1° 

• Resolution: 0.01°

• Zero temperature drift (−40 to 85°C): ±0.01°/°C 

• Cross-axis error (25°C): 0.1° 

• Max output frequency: up to 100 Hz 

Wireless communications (LoRa)

The LR-WL300 uses LoRa wireless with a stated maximum communication distance of 5 km (deployment conditions can materially affect range). 
A listed LoRa frequency band is 410.125–493.125 MHz (regional radio regulations vary; deployments generally select models/bands appropriate to local requirements). 

LoRa and LoRaWAN are widely used for low-power wide-area networking (LPWAN)—a class of wireless connectivity designed for long range and low energy consumption, often at the cost of lower data rates compared to cellular. 

Power and electrical characteristics

The LR-WL300 is designed for battery operation and specifies both rechargeable and primary battery options:

• Rechargeable battery charge voltage: 8.4 V DC 

• Primary battery voltage: 3.6 V DC 

• Standby current (typical): 6 μA 

• Average operating current: 50 mA 

• Rechargeable battery capacity: 6000 mAh 

• Primary battery capacity: 19000 mAh

Environmental and mechanical specifications

• Operating temperature: −40°C to 85°C 

• Shock resistance: 2000 g, 0.5 ms, 3 times per axis 

• Dimensions (without antenna): L105.2 × W85 × H76 mm (approx.) 

• Weight: < 500 g 

• Antenna (standard): height 110 mm; gain 2.5 dBi 

Applications and Use Cases

The LR-WL300 is positioned for infrastructure and geotechnical monitoring, with application examples including:

• Unsafe/at-risk building monitoring

• Bridge and bridge-tower tilt monitoring

• Dam monitoring

• Slope disaster prevention (landslide/embankment monitoring)

• Historic building protection monitoring

• Tunnel monitoring

• Foundation pit / excavation monitoring

• Tower and mast tilt monitoring 

Advantages / Benefits

Reduced wiring and faster deployment

Wireless LoRa inclinometers can reduce installation time and civil works compared with wired tilt sensors, especially on long spans (bridges), remote slopes, or distributed tower sites.

Long-range, low-power telemetry

LoRa is designed for low power and long range in LPWAN scenarios, which aligns with multi-site monitoring where sensors must operate for extended periods on battery power. 

Field diagnostics support

Providing temperature and battery voltage alongside tilt values enables practical diagnostics—helpful for maintenance planning and validating sensor behavior in harsh temperature cycles. 

FAQ Section

What is the BWSENSING LR-WL300?

The LR-WL300 is a dual-axis wireless inclinometer that measures tilt (up to ±90°) and transmits data over LoRa networks for applications such as structural and geotechnical monitoring. 

How does the LR-WL300 work?

The sensor measures inclination along two axes relative to gravity, then sends readings (and related telemetry such as temperature and battery voltage) wirelessly via LoRa to a receiving system for monitoring and alerts. 

Why is a wireless LoRa inclinometer important?

Wireless LoRa inclinometers support long-range, low-power monitoring where wiring is costly or impractical—such as bridges, slopes, tunnels, and towers—helping operators detect gradual tilt changes and potential risk conditions. 

What are the benefits of the LR-WL300?

Key benefits include dual-axis tilt measurement (±90°), IP68 protection, ultra-low standby current, and long-range LoRa communication (up to 5 km stated), with built-in sleep/wake modes to support battery deployments. 

Summary

The BWSENSING LR-WL300 is a dual-axis, IP68-rated LoRa wireless inclinometer built for outdoor monitoring projects that require long range, low power, and robust environmental resistance. With ±90° measurement range, 0.1° stated accuracy, 0.01° resolution, and battery-oriented sleep/wake modes, it is commonly positioned for bridge, dam, slope, tunnel, and tower tilt monitoring deployments.