compare security systems for home
2. It also has a 110 dB alarm, 2 way talk, and the ability to record your own greeting. 6 x 1. 88 View at eBayRecommended Retailer$189View at Google Store$229View at Walmart?Nest's doorbell cam produced the best looking video we've yet seen from one of these devices, and its microphone and speaker were excellent, too. It can also recognize people's faces, and announce them when they come to your door. While it needs a hardwired connection, it continuously records video, so you'll never miss an event.