- AC Doorbell, receiver(indoor machine) using household power supply, plug into the socket directly. It will save battery charge, protect environment and convenient.
- Super-strong reception,suitable for home,office buildings, hotels, buildings, dormitories, factories, construction sites, etc.
- They won’t interfere with each other for same types of doorbells working in one same area! With high frequency wireless transmission techniques, the same frequency with different code can effectively avoid the neighborhood doorbell’s interference and the annoyance caused by the wrong ring.
- One doorbell can be paired with multiple Ding-Dong doorbells.