This 2-in-1 ultrasonic device from MODUS is a versatile tool for dog owners. It can be used as an anti-barking device and a training aid. The device is suitable for Affenpinscher and other dog breeds. It features a rechargeable battery, weatherproof design, wall mount, and an internal microphone. The device emits a high-pitched sound that can only be heard by dogs, which helps to stop excessive barking. It can also be used to train your dog to obey commands and discourage bad behavior. This device is a must-have for any dog owner who wants to improve their dog's behavior without the use of harsh methods.