This ultrasonic dog repeller circuit will chase away angry dogs. It is build with the all known 555 circuit, a buzzer and a little ferrite transformator. The ultrasonic frequency must be set with a ...

ULTRASONIC DOGTRAINING DEVICE: 2-in-1 Ultrasonic Dog Trainer is a professional device for Dog Training and Dog Bark Control. Ultrasound emitted by dog training control device can attract the attention ...

The electronic dog repellent circuit diagram below is a high output ultrasonic transmitter which is primarily intended to act as a dog and cat repeller, which can be used individuals to act as a ...

Wide Coverage, Wide Application:Ultrasonic dog repeller Infrared sensor can detect 110 degrees and the range is 25-30 feet. Continuous use for 2 to 3 weeks can achieve the best results.