This ultrasonic generator generates siren-like pulsating, aggressive ultrasonic sounds that are perceived by many animals as extremely unpleasant, and therefore are largely avoided. The generator should be used deter rodents, insects and crawling parasites, wildlife and birds. The generator frequency can be adjusted between 8 - 40 kHz. There is a built-in special loudspeaker with vaulted aluminium spherical membrane for a better sound distribution. Commissioning also requires a stabilised power supply 12 V/DC (< 60 mA). Technical data: Operating voltage 12 V / DC (10 to 13.8 V / DC) Energy consumption approx.< 60 mA Adjustable frequency approx. 8 - 40 KHz (± 15%) Frequency deviation, approx. 2 x per second approx. 2 - 3 kHz (automatic frequency change, siren-like) Sound pressure up to 100 dB (±15 %) (ultrasonic devices should have sound pressure level of over 100 dB(C), in order to prevent habituation (result: ADAC test). (Source de.wikipedia.org/wiki/Marderabwehr) Range > 40m in free field of vision Speaker opening angle max. 140° Possibility to connection additional Piezo speakers max. 4 pcs possible Function display flashing LED Connection via cable Dimensions approx. 72 x 50 x 33 mm (without mounting brackets) https://elecena.pl/product/18102996/m071n-ultrasonic-vermin-repeller 2021-04-30 https://elecena.pl/product/18102996/m071n-ultrasonic-vermin-repeller 2022-02-01 https://elecena.pl/product/18102996/m071n-ultrasonic-vermin-repeller 2022-04-27 https://elecena.pl/product/18102996/m071n-ultrasonic-vermin-repeller 2023-03-19 https://elecena.pl/product/18102996/m071n-ultrasonic-vermin-repeller 2025-04-02