Gecko Seismographs
Digital Recorder or Digital Sensors. Which is right for you?

Gecko Compact Seismic Recorder

Portable Triaxial Digital Sensors

Professional Digital Seismographs

Download the Gecko Range Brochure
Technical Specifications
The Gecko is all about class-leading user experience, but it has the performance to match. Here's an overview of the tech specs.
Inputs
32-bit ADC
- 3+1 channels, 40Vpp input range
- Gain options: x1 x2 x4 x8 ... x512
- Low Noise, High Dynamic Range; Below NLNM for 750V/m/s and higher sensitivity seismometers
- Sample rates: 50, 100, 200, 250, 400, 500, 800, 1000, 2000, and 4000 samples per second
- Power: 7-30V DC, only 0.9W
- LCD and 4-button keypad allows full configuration - no laptop required! Easy field deployed for students and professionals alike.
Processing
MiniSEED
- Continuous data always recording to ring buffer
- MiniSEED data format and system information text files
- Internal GPS receiver timestamps data every second ensuring data is within 10 microseconds of UTC
- Trigger logging using Level and STA/LTA algorithms
- State of Health logging
- GeckoLink accessory available for SeedLink over Ethernet
Outputs
Data Archive
- 32GB removable SD card storage
- 12+ month recording @ 100sps
- Two trigger/SOH alarm outputs
- Ethernet/WiFi adaptor available
- GeckoLink accessory available with 64GB removable USB storage also acts as SeedLink server over Ethernet
- Included application software: Waves for waveform analysis; Streams for real time display, data archiving and remote Gecko configuration and upgrades
Features & Price
Choose a Gecko for your application.
Gecko Compact
Recorder
- Bring Your Own Sensor
- Half price vs. competing models
- Built-in User Interface
- Wireless telemetry options
- Removable SD card, IP65 case
Blast & SMA
Portable
- All-in-one weatherproof design
- Months of continuous recording
- Handles rough field handling
- Extra input for Microphone
- Alarm & Telemetry options
SMA-HR & SMA-XR
Structures
- Natural Period & Modal Analysis
- 2µg noise to ±10g SMA-XR
- 1ng noise to ±2g SMA-HR
- Internal battery option
- IP67, central bolt mounting
TREMOR & PRISM
Earthquake
- Local, Regional or Global Scale
- 2Hz-500Hz, 254mm/s TREMOR
- 10s-150Hz, 50mm/s PRISM-SP
- 40s-90Hz, 40mm/s PRISM-MP
- 120s-60Hz, 40mm/s PRISM-LP
History of Kelunji Seismographs
"Kelunji" is an Aboriginal word for a small cockatoo known locally as a "galah" - also an Australian euphemism that reflects some traits of our seismologists 😉

Starting in the late 1970s, our first generation digital recorders, the Alpha and Beta, used cassette tapes for triggered data recording. The first recorder known as "Kelunji" is now referred to as the Classic, and was our first to use solid state memory (1MB!). This was followed by the D-series and 24-bit Echo that used high volume CompactFlash Card storage, with the EchoPro (and briefly Fusion) moving to USB data storage. Following the ABCDEF nomenclature, our 7th generation "G" recorder recalls the Echo name and its core values of user-friendliness and continuous recording.
Of course our latest recorder needed to use the latest technology, which includes 32-bit ADC chips and other components that enables the Gecko to use a fraction of the power of previous generation machines.
As always, the Gecko supports sensors from any and all manufacturers: be they geophones or microphones; blast or earthquake accelerometers; or short period to broadband seismometers.
Our technology doesn't end at the recorder - we have developed data telemetry solutions, network management and data display software, and data analysis and alerting applications. The Gecko is just the first step in the complete seismic monitoring solution developed by the Seismology Research Centre and manufactured by ESS Earth Sciences.