Ability to detect dog barking: The bark control device accurately detect dog barking in order to activate promptly. Multiple mode options: Different dogs may require different modes, so the bark control device should provide multiple mode options to adapt to different situations. Applicable to different dog breeds: Different dog breeds have different barking frequencies, so an excellent bark control device should be able to adapt to the barking of different dog breeds. Adjustable sensitivity: Some dogs bark softly, while others bark loudly, so an excellent bark control device should provide adjustable sensitivity to adapt to the barking of different dogs. Low false alarm rate: The bark control device should not mistake other noises (such as car horns or train whistles) for barking, as this would reduce its reliability. Safety: The bark control device needs to be made of safe materials and should not cause any harm to dogs. Rechargeable battery: An excellent bark control device should have a rechargeable battery to avoid the hassle of frequent battery replacement. Waterproof and moisture-proof: The bark control device needs to have waterproof and moisture-proof features so that it can be used in rainy or humid environments without any problems.