Support RF 433M frequency connect to chime. Smart Doorbell, New private mold. High Quality two-way intercom with echo cancellation. Day and night mode, automatic switching. 155°wide viewing angle. H.264 video compression standard. Instant notification within 1s. Support TF card Max.128GB and cloud storage. Support external power supply. Built-in 9600mAh lithium battery, standby time up to one year in theory. Support Ubox、Tuya 、Google home、Alexa Chime optional.
