wifi video doorbell 1080p wireless smart security camera door bell 2-way talk pir motion detection night vision tuya intercom

the second method is to use ac 8 to 24v hard-wired power supply. guaranteed after-sales service to assure your long-term enjoyment. if you have any question or don't know how to use the smart doorbell supports two fixing methods: the first method is to use the matching double-sided tape to directly paste it on the wall. the second method is to use the matching screws to punch holes install; the smart doorbell supports two power supply methods: the first is to use the matching three 18650 batteries to directly supply power..syi