Wireless Dog Doorbell: This wireless doorbell allows pets to give signals in an easy way, whether for entry or exit, and the pet training bells can promote effective communication. IP44 Waterproof: IP44 waterproof makes these pet training bells resistant to light moisture, so they can be used both indoors and outdoors, no matter what the conditions weather. 【5 Volume Levels & 60 Ringtones】Pet training bells with different volume options and a wide range of ringtones, this system allows for personalized adjustment to your pet's needs and your preferences. Widely Uses: Pet training bells, ideal for dogs and cats, both as a training tool and access control. This waterproof doorbell is versatile for indoor and outdoor use to meet different needs of your pets.