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Open Acoustic Devices

Audiomoth v1.2.0 with Green AudioMoth Case

Audiomoth v1.2.0 with Green AudioMoth Case


Regular price $114.99 USD
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AudioMoth is a low-cost, full-spectrum acoustic logger, based on the Gecko processor range from Silicon Labs. Just like its namesake the moth, AudioMoth can listen at audible frequencies, well into ultrasonic frequencies. It is capable of recording uncompressed audio to microSD card at rates from 8,000 to 384,000 samples per second.


  • EFM32 Gecko processor
  • Capable of recording at sample rates up to 384kHz
  • Records uncompressed WAV files to microSD card
  • Powered by 3 x AA batteries
  • Analog MEMS microphone
  • Analog pre-amplifier with adjustable gain
  • Measures just 58 x 48 x 15 mm
  • Configurable USB interface
  • Onboard real-time clock keeps track of time in UTC
  • Exposed header for 3.5mm jack mic from version 1.2.0 onwards


Find all instructions, guides, and downloads on Open Acoustic Devices Website

AudioMoth in the News


  • Journal of Open Hardware - Open hardware provides a better chance for scientific reproducibility
    • Article by Andrew Hill and Alasdair Davies


  • BBC iPlayer - Inside the Bat Cave
    • BBC documentary showing AudioMoth being used to discover the secret world of one of the most endangered and least understood animals on earth – bats.
  • The Guardian - New sensor offers a window into the secret lives of Britain's rarest bats
    • Article by Phoebe Weston on how AudioMoth was used to identify 1.7 million bat calls.


  • BBC - Endangered bats: The manicure helping to save a species
    • Article by Helen Briggs with picture showing AudioMoth
  • WightLink - Wightlink helps to plot the journey of one of the Isle of Wight’s most special seasonal visitors
    • Wight Link press release by Karen Woods where Adrian Bicker describes using AudioMoth to monitor bat migration
  • Silicon Labs - Open Acoustic Devices takes low power to new heights for wildlife conservation
    • Blog by Lance Looper describing how the Silicon Labs processor lowers the power for acoustic monitoring


  • Chinadialogue - Five technologies to save wildlife from traffickers
    • Article by Catherine Early introducing technology built in collaborations between conservationists and tech developers.
  • RSEC blog - Optimization of sensor deployment for acoustic detection and localization in terrestrial environments
    • Article and video introducing our recent paper on sensor optimization
  • Medium Article - Acoustic monitoring made affordable with AudioMoth
    • Article by Holly Baines discussing how AudioMoth is manufactured and supported at a low cost
  • Sparkfun Blog - Scaling Open-Source Conservation Technology
    • Article by Megan Arnold describing how AudioMoth has been scaled to enable global conservation  projects
  • Mongabay Latam Article - Acoustic monitoring: a new system to fight against hunting and illegal logging
    • Article by Yvette Sierra Praeli describing how acoustic monitoring can be used to prevent poaching
  • Mongabay Article - ‘AudioMoth’ device aims to deliver low-cost, power-efficient monitoring of remote landscapes


  • WWF Conservation Technology - Acoustic Monitoring for Conservation and Ecological research
    • PDF report by WWF describing the guidelines of using acoustic monitoring, featuring a case study using AudioMoth
  • BES Press Release - Listening in: Acoustic monitoring devices detect illegal hunting and logging
    • Press release by Sabrina Weiss describing Evelyn Piña Covarrubia's presentation at the ‘Ecology Across Borders’ conference in Ghent
  • Oxford Sparks Podcast - Where have all the cicadas gone?
    • Podcast asking Prof Alex Rogers, Peter Prince and Andrew Hill: Where have all the cicadas gone?
  • New Scientist Article - Hanging on: In search of the bat that returned from the dead
    • Article by Ollie Wearn using AudioMoth to monitor the Cuban greater funnel-eared bat
  • Medium Article - Listening to the mountain: Using audio recorders to monitor forest birds in Kenya
    • Article by Ciira Maina using early prototypes of AudioMoth to monitor the forest birds in Kenya
  • New Scientist Article - Drones listen in on bats to reveal their in-flight secrets
    • Article by Chris Baraniuk using AudioMoth to monitor bats by drone
  • Journal of Animal Ecology Press - New technologies for listening to bats
    • Article by Simon Hoggart using AudioMoth to monitor bats in Madeira
  • BBC - The search for Britain's only native species of cicada
    • Article by Chris Baraniuk introducing an early version of AudioMoth to monitor the New Forest cicada

AudioMoth Case

The official AudioMoth IPX7 waterproof case from Open Acoustic Devices is designed specifically for AudioMoth version 1.0.0 to 1.2.0. It is effectively sealed using an easy-to-use clasp with compression o-ring. The acoustic path is protected from water-pooling with a neatly designed rain-hood and the microphone opening is waterproofed using a Porelle acoustic vent. The case is made from injection-molded polycarbonate and comes with an adjustable velcro strap, which makes securing AudioMoth simple and easy. The case is compact and highly resilient and will house AudioMoth for extended periods of time in a wide variety of environments.


  • Waterproof to IPX7 (1 meter submersion for 1 hour with no leakage)
  • Comes with a velcro strap for easy deployment on 3-6 cm diameter branches/poles. 
  • Rain-hood to prevent water-pooling around microphone 
  • Easy to use clasp for simple battery and MicroSD card changes
  • Compatible with AudioMoth 1.0.0 and AudioMoth 1.1.0. 
  • The case requires 40 minutes for the air pressure to equalize after the clasp is sealed.



SD Card and AA Batteries are not included


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