YIORTWO CR04-RB1 Under-Hood Ultrasonic Rodent Repeller

Repeller: The YIORTWO CR04-RB1 is an under-hood rodent deterrent listing ultrasonic frequencies, flashing LED strobes, and three power options. Its motion sensor is said to pause operation while the vehicle moves and restart when parked, while the listing also describes use in indoor spaces.

At a glance

Combines ultrasonic output listed at 22-50kHz with pulsating LED strobes.
A built-in vibration sensor is described as pausing the device while driving and reactivating after the vehicle stops.
Three stated power choices are 4×AA batteries, USB to Type-C, or a vehicle power cable connected to the battery.
Listing describes low-voltage protection and use in vehicle engine bays, garages, sheds, attics, and basements.

Price

$25.99Save 19%

Reference price: ~~$31.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Multiple power methods can suit vehicles with different parking and storage routines.
Automatic pause while driving may reduce unnecessary operation, according to the product description.
The listing includes zip ties for installation and describes a direct-to-12V-battery connection option.

Cons

The 4×AA batteries are not included, so battery-powered use requires a separate purchase.

Technical specifications

6 specifications

Identity
Brand	YIORTWO
Model	CR04-RB1

Power and battery
Power configuration	dc

Dimensions and installation
Dimensions listed	4.53"L x 1.65"W x 5.67"H
Weight listed	7.2 ounces

Materials and protection
Material listed	Plastic

What to know before buying

The claimed rodent deterrence and low-voltage protection are manufacturer descriptions, not independently verified performance. Battery life is described only as extended with regular vehicle use, without a stated duration.

What’s in the box

4×AA batteriesNot included
Zip tiesCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Drivers seeking a multi-mode deterrent for a parked vehicle or stored RV or boat.
Buyers who want a unit that can also be placed in a garage, shed, attic, or basement.

Less suited to

Buyers who need a specified battery runtime or independently documented deterrence results.
Anyone expecting included AA batteries. The listing says they are not included.

YIORTWO CR04-RB1 Under-Hood Ultrasonic Rodent Repeller · photo 2 — Additional product photo 2

Customer reviews on Amazon

5 / 5 · 27 ratings

5 stars100%100%
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The listing shows uniformly five-star aggregate ratings from a small set of ratings, but no written feedback is supplied. Those scores cannot establish how well the unit deters rodents or how its power and motion-sensing features perform in use.

Frequently asked questions

What power options does the YIORTWO CR04-RB1 list?

The listing describes 4×AA batteries, a USB-to-Type-C connection, and a vehicle power cable for direct connection to the 12V battery. The AA batteries are not included.

Does it stay on while the vehicle is moving?

The product description says its vibration sensor pauses operation while the vehicle is moving and reactivates after it comes to a complete stop.

Can it be used outside a vehicle?

The listing also names garages, storage sheds, attics, and basements as possible locations.