The MR3003SB is a dedicated seismic monitoring system for structures and buildings. Its compactness with all must-have features already integrated makes it an ideal motion recorder for any type of structure, tailor-made for buildings.


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Product Features

  • Compact unit containing sensor, recorder, battery and communication
  • Daisy-chain Fiber Optic or Ethernet Copper type cable
  • Internal AC/DC converter
  • Embedded Web server for easy configuration and control
  • Optional GPS timing


The MR3003SB seismic monitoring system is the most advanced, integrated, and reliable monitoring system for structures and buildings, able to automatically detect,
record, and process any strong motion vibrations that might affect the structure. A daisy-chained network (Fiber Optic or Ethernet Copper cable) coupled with the latest data
retrieval capabilities, make the MR3003SB the easiest to use and most versatile instrument available on the market.

The all-in-one Red Box with an internal battery, AC/DC, and terminals already integrated provides all the necessary features for easy installation without any additional
parts. Command & control access through an embedded web server provides a self-explanatory interface for system set-up and control.

The optional kit with 3 configurable relay outputs (alarm 1, alarm 2, device error) can be directly connected to any external alarming devices and used as an earthquake
early warning system. A common logic system, for a typical 3-station network, will ensure the highest reliability and avoid spurious activation of the warning system.

Data acquisition

General principle 4th order delta-sigma ADC per channel
Resolution 24 bits
Sampling-rate 250, 500, 1’000, 2’000, 4’000 sps
Number of channels 3
Channel to channel skew None, simultaneous sampling on all channels
Data Filter Anti-aliasing filters
Trigger Filter Digital IIR filter: 0.5 – 15 Hz band-pass (Strong Motion Applications)

Trigger and de-trigger

Principle Principle Level trigger or STA/LTA or automatic adjustment of trigger level
Trigger voting logic Predefined AND or OR combinations, individual channel votes
Trigger level 0.1 mg to 4 g
STA / LTA STA: 0.1 to 25s, LTA: 1 to 250s, ratio 0.1:25
Smart Trigger / De-Trigger Automatic adjustment of trigger level


Recording Principle Event recording (time history), continuous-time recording, or manually triggered
Header Contains status information at time of trigger and event summary
Pre-event recording 1-99 seconds (@250Hz), others depending on sampling rate
Post-event recording 1-100 seconds
Max. recording time Unlimited
Memory Removable SD flash card (4GB)
Timing System clock 1ppm, could be disciplined by NTP or GPS (optional)
Data / User Interface Web interface Easy to use command & control through embedded web server
Intelligent Alerting System initiates communications and sends e-mail when an event is recorded
FTP Built-in Built-in client protocol supporting FTP, SFTP, FTPS able to push to a server
API Application programming interface REST with extended functions available
Alarm triggers Principle Two alarm levels independently settable as threshold levels or user-defined curves, with various notification options (individually settable for each axis)
Alarm level range 0.1 % to 100% full scale
User-defined alarm Thresholds and frequencies individually settable for each axis
System status 3 LEDs Run, Recording, Warning/Error. Internal LCD with status info and important settings

Network capabilities

Common trigger and common alarm Configurable with AND/OR logic, for every device within the same network
Sync. in LAN network Typically 1 ms with NTP protocol
Max. number of MR3003SB 32, in Master/Slave configuration
Remote control VPN, DDNS

Power Supply

Power supply 100 – 240 V AC, 50 – 60 Hz, internal AC/DC. Optional DC power 10-36 V DC
Internal battery 12 V, 12 Ah
Consumption 4 W (with charged battery), 25 W (AC max. and battery in charge)
Battery autonomy Typical 60 hours in stand-alone mode

I/O (glands and connectors)

Power M16 cable gland 4-11mm / Terminals on the AC/DC
Kit Relays (3) On request, M16 cable gland 7-11mm / Terminals
Kit daisy-chain LAN On request, RJ45 panel mount
Kit FO On request, M20 cable gland 6-13mm / ST connectors
Kit GPS On request, connector and GPS antenna with 5 m cable for time synchronization

LAN cables

Fiber Optic type Multimode OM2 fiber with wavelength 1300 nm, 50/125 μm, Rx/Tx
Ethernet Copper type Cat 5e, <100m

Relays kit

Configuration 3 output configurable relays, No/Nc
Current 2 A, 30 V DC

Acceleration sensor

Principle Micro-machined capacity MEMS accelerometer
Hysteresis None
Noise (10 to 1000 Hz) Typ. 7 μg/√ Hz
Frequency range DC to 600 Hz
Dynamic range Typ. 100 dB @ 200 sps
Measuring range ±4 g
Sensitivity 1.25 V/g differential
Scale factor error < 1 %
Mounting Horizontal, vertical, or ceiling (horizontally mounted on the ceiling), to be specified when ordering
Self-test Test-pulse, configurable


Dimensions 330 x 230 x 110 mm
Weight 9.5 Kg
Protection degree IP67, temporary static immersion in water


Shock 30 g/11 ms half-sine
Heat -20 °C to +50°C
Humidity up to 100% RH


EMC IEC 61326-1
Electrical safety IEC 61010
Conformity CE
Origin Swiss Made

File Name

MR3003SB datasheet

Resource Type

Language Version Download

Speak with an Expert

I’m very happy with the quality of the instrumentation and technical support from RST, as always. They worked with us from the initial stages of the project to ensure that we were fully prepared and equipped to use the RSTAR network for the first time. They delivered everything within the tight project time frame to ensure that there were no delays on site, and the submersible tilt meters looked like new even after over twelve months of being submerged in Thames water!
-Richard Lipscombe, BEng (Hons), Director & Principle Consultant - RL Geotechnical Ltd