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 ...

Product Name: Ultrasonic dog repeller online Frienda LED Ultrasonic Dog Repeller and Trainer Device 3 in 1 Anti online, Amazon Dog Barking Control Devices Dual Sensor Anti Barking online, Best ...

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 ...

BOYNTON BEACH — It may be a dog-eat-dog world, but the city’s water meter readers may soon have an advantage on ferocious canines who prevent them from doing their job. Meter reader Gary Haylock has a ...

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The Tribune, now published from Chandigarh, started publication on February 2, 1881, in Lahore (now in Pakistan). It was started by Sardar Dyal Singh Majithia, a public-spirited philanthropist, and is ...