Multiple ringtone options: Provide a variety of ringtone options or voice messages, allowing you to personalize the sound alert according to your preferences. Application: Suitable for homes, commercial stores, shops, hotels, factories, door entrances that require guest salute functions. Volume adjustment: The doorbell has three levels of weak/medium/strong volume adjustable, high volume; a variety of pleasant ringtones can be switched at . Easy to install: The doorbell can be installed in any position with magnetic mounting, hole-free mounting and adhesive backing to meet your different needs. saving: Designed to save , low consumption, extend battery life or reduce costs for long-term use., Weight: 0.24140617689 Pounds, Manufacturer: Tuidzljd