Prevent Barking Noise And DisturbanceProduct information: color: White material: plastic Applicable object: general Features: 1. Built in pickup to detect dog barking 2. The sound activated horn generates ultrasonic waves and emits them 3. Digital display, rechargeable 4. Ultrasound has 4 frequencies to choose from, it is more effective to stimulate different kinds of pets or animals. 5. The sensing distance can be selected, the sensitivity can be adjusted, and the best suitable gear can