wifi 720p video doorbell wireless door phone intercom monitor smart bell hd camera pir motion sensor night vision unlock

wifi video doorbell with a wireless connection router . by connecting the wireless router at home, it can realize two-way intercom between the handheld terminal (handheld end including smartphone, android tablet) and doorbell; when the visitor presses the doorbell, when the triggering doorbell sounds. after the user connects, he can immediately check who the visitor is and can decide whether to talk with him or not. door locks .