Smart Video Doorbell Wireless Security Camera Door Bell Rechargeable
First plug in the ding dong to power on, press the doorbell ding dong whether it will ring. T wo-way intercom. ⭐Doorbell 1. Voice system: two-way intercom. ⭐ USB ding dong 1. Wireless connection: WIFI IEEE802.11b/g/n 2.4GHz,rf433MHz.