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KEMO Ultrasonic Signal Generator Module - Rotary Switch, Automatic Operation, 15V DC, <50mA, 8-40kHz, 60x45x29mm

KEMO Ultrasonic Signal Generator Module - Rotary Switch, Automatic Operation, 15V DC, <50mA, 8-40kHz, 60x45x29mm

Q: Someone mentioned the frequency fluctuates. Can you lock in a frequency or does it always fluctuate?

My unit does "waver" at about 2 Hz around the set center frequency. When in the audible region it sounds like a sound effect in an old TV show. The "wavering" is definitely an intentional design feature, not a problem with the circuitry. I watched the output on an oscilloscope and the wavering continues even as the frequency moves to the highest end of the frequency range. For any use other than a pure signal generator, like trying to drive away critters, the wavering is probably a good design feature.

Q: If I use this device + piezo loudspeaker + bullhorn will I be able to get the desired effect on a dog about 150-200 ft away?

It works good on some dogs at that range, but others can be within 50 and ignore it. We had 3 dogs next to us and 2 of them never noticed and the 3rd one would stop barking and run for the house. He would head to the house when he was at least 200 feet away, he soon became a non barking dog.

Q: Can this run on batteries? Or only DC power plug?

Batteries such as AA or AAA or similar chemical batteries are DC. The device does not come with a battery compartment. I guess if you attached a battery the device would work.

Product ID: 208075725

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Details

Operation mode
automatic
Current rating
5E+1 Milliamps
Operating voltage
15 Volts
Contact type
Normally Open
Connector type
Screw In
Brand
KEMO

⚡12-15V DC power input

🔊Supports up to 4 piezo speakers

🎚️10-position rotary frequency switch

Frequently Bought Together

KEMO Ultrasonic Signal Generator Module, Push Button Switch, Rotary Actuator, Automatic Operation, Black

Piezo Loudspeaker for Ultrasonic Power Cannon (M161) Kemo part L010

Piezo Spherical Dome Tweeter with Flare (L001) for ultrasonic Sound Generator M048N

Description

🔊 Ultrasonic power at your fingertips — repel pests like a pro!

LOW POWER HIGH IMPACT - Operates under 50mA current at 12-15V DC, ensuring energy-efficient, continuous operation without draining your resources.
VERSATILE PEST DEFENSE - Effectively repels rodents, insects, birds, and even serves as a dog whistle—perfect for home, garden, car, or storage protection.
COMPACT DURABLE DESIGN - Encased in a fully potted plastic enclosure, this module is built to withstand environmental challenges while maintaining sleek portability.
MULTI SPEAKER COMPATIBILITY - Connect up to four piezo speakers to amplify coverage and maximize pest deterrence across larger areas.
PRECISION FREQUENCY CONTROL - Easily select ultrasonic tones from 8kHz to 40kHz with a top-mounted rotary switch for tailored pest repelling.

The KEMO Ultrasonic Signal Generator Module is a compact, energy-efficient device designed to emit adjustable ultrasonic frequencies (8-40kHz) via up to four piezo speakers. Powered by 12-15V DC and controlled through a 10-position rotary switch, it offers a versatile, durable solution for repelling a wide range of pests including rodents, insects, and birds, making it ideal for professional and home environments alike.

Specifications

Manufacturer	Kemo Electronic
Part number	M048N
Item Weight	454 g
Package Dimensions	13.31 x 8.61 x 4.19 cm; 453.59 g
Item model number	4330881478
Colour	Black
Power source type	Corded Electric
Voltage	12 Volts
Wattage	4 watts
Item Package Quantity	1
Switch Type	4-way
Batteries included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Someone mentioned the frequency fluctuates. Can you lock in a frequency or does it always fluctuate?

If I use this device + piezo loudspeaker + bullhorn will I be able to get the desired effect on a dog about 150-200 ft away?

Any idea what AC power adapter to power this unit? thanks

Can this run on batteries? Or only DC power plug?

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