
Structural health monitoring for everyone
The EQResponder 120 dB accelerograph offers performance comparable to traditional force-balanced accelerographs at a fraction of the price.

Targeted design
The EQR-120 strong motion accelerograph is an extended dynamic range accelerograph, suitable for earthquake science studies or high-end structural dynamics, such as advanced building state-of-health analysis.
The EQR-120 has been designed to offer performance comparable to traditional high-end accelerographs at a significantly reduced total installation cost by the use of latest generation MEMS technology and leveraging our experience in providing end-to-end solutions.
Key Features
Integrated Web Server
An intuitive self-hosted web interface provides dynamic monitoring and configuration capabilities on any device
Microsecond Precision
Built-in GNSS, Precision Time Protocol (PTP), and Network Time Protocol mean your data is always synchronised for forensic-grade reliability
Intelligent Recording System
Highly customisable filtering, triggering algorithms, pre- and post-event windows and export data formats make it simple to capture and process your desired signal
Flexible Installation
Electronic offset removal, real-time coordinate transforms and multiple communication options make fieldwork a breeze
Engineered for Integration
Seamlessly integrate with existing systems and implement hands-off management using the programmatic API
Long-Term Storage
A rolling buffer retains 90 days of full-fidelity data to ensure nothing is lost
Which EQResponder is right for me?
Compare the main differences between the EQResponder family strong motion accelerographs
Earthquake Response EQR-90 | Structure Diagnostics EQR-120 | |
---|---|---|
Accelerometer | Tri-axial MEMS silicon | 3x uni-axial MEMS servo silicon |
Range |
± 5g |
± 4g |
RMS Noise (Typical) |
~180 µg horizontal axes; ~220 µg vertical axis |
~10 µg for all axes |
Dynamic Range and Resolution | ~90 dB dynamic range; 24-bit resolution | 120+ dB dynamic range; 31-bit resolution |
Can't decide? Detailed specifications are available here: EQResponder Technical Specifications
Contact our sales team to learn more or request a quote
Instantly understand
For every site and every building.
No compromise. Part of our new generation of compact, simple, strong motion accelerographs. Order of magnitude increase in measurement density, without performance limitation.

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