Generates strong, pulsating ultrasonic sounds, perceived by martens and other rodents as annoying thus allowing you to scare these animals away. This module includes 4 small Piezo ultrasonic speakers to ensure a good distribution of the ultrasonic sounds. Tone frequency: adjustable. Operating voltage: 12...15 V = Power consumption: at 12 V< 0,05 A Speaker output: only for Piezo speakers Tone frequency: adjustable 10 ... 40 kHz (+/-20%) Piezo speaker dimensions: approx. Ø30 mm x 13 mm Module dimensions: 75 x 45 x 28 mm https://elecena.pl/product/17838613/m-094n-marten-stopper-module 2021-04-23 https://elecena.pl/product/17838613/m-094n-marten-stopper-module 2022-04-25 https://elecena.pl/product/17838613/m-094n-marten-stopper-module 2023-04-05 https://elecena.pl/product/17838613/m-094n-marten-stopper-module 2025-04-04