01 / 01OPEN ACOUSTIC DEVICES
HydroMoth Autonomous Underwater Acoustic Logger
AUTONOMOUS UNDERWATER BIOACOUSTIC LOGGERSpecialized underwater autonomous acoustic logger engineered for marine bioacoustics and freshwater ecology, recording up to 384 kHz sample rate with low clock drift and an integrated magnetic reed switch for wet-environment control.
Acoustic Sample Rates8, 16, 32, 48, 96, 192, 250, 384 kHz full-spectrum audio recording
Hydrophone / SensorIntegrated low-noise MEMS acoustic sensor with high ultrasonic bandwidth response
Configuration, availability and delivery confirmed with your quotation.
01 / FIELD CAPABILITIES
Built for the task.
- Records full-spectrum aquatic audio up to 384 kHz to capture cetacean echolocation, snapping shrimp, and fish vocalizations
- Built-in magnetic reed switch allows researchers to start, stop, or check status using an external magnet in wet environments
- Upgraded precision MEMS oscillator minimizes clock drift across prolonged underwater submersions and cold water thermoclines
- Configurable bandpass filters and threshold triggering record target vocalizations while preserving battery and storage
- Seamlessly integrated with open-source AudioMoth Configuration App and Flash App for rapid schedule programming
02 / TECHNICAL DETAILS
Precision, specified.
- Acoustic Sample Rates
- 8, 16, 32, 48, 96, 192, 250, 384 kHz full-spectrum audio recording
- Hydrophone / Sensor
- Integrated low-noise MEMS acoustic sensor with high ultrasonic bandwidth response
- Clock Stability
- Precision temperature-compensated 32.768 kHz MEMS oscillator with ultra-low clock drift
- Switching Mechanism
- Internal magnetic reed switch enabling contactless power and recording control without opening case
- Storage Media
- MicroSD card slot supporting FAT32 cards up to 128 GB and beyond
- Audio Format
- Uncompressed 16-bit PCM WAV audio files with configurable gain settings
- Power Supply
- 3 × AA alkaline or NiMH rechargeable batteries; external power connector
- Enclosure Compatibility
- Designed for official HydroMoth underwater pressure housing rated to deep aquatic deployments
- Indicator LEDs
- Re-positioned high-visibility diagnostic LEDs visible through thick aquatic casings
- Operating Temperature
- -20°C to +50°C (-4°F to 122°F)
Key specifications and field-use details. Exact configuration may vary by model or selected variant.
Open Acoustic Devices
Pioneering open-source autonomous bioacoustic loggers, underwater acoustic monitors, and ultrasonic sensors for biodiversity research.
CONTINUE YOUR EXPLORATION
All products COMPLETE YOUR FIELD KIT.
YOUR NEXT EXPEDITION STARTS HEREBig terrain.
Big terrain.
Bigger possibilities.
Tell us where you're headed.
We'll help you get equipped.