The EZVIZ C3A is 100% cordless and power independent. Making it easy to place it anywhere you want without the hassle of dealing with cables. When the EZVIz W2D hub base is added, the battery life is extended to 9 months. (Normal operating conditions: normal room temperature and normal room temperature. Activating 5 min per day). The C3A can be connected directly to your WiFi network. Or you can also connect it to the W2D base station. and configure the W2D to your router. The C3A is IP65 certified. Which means that it resists any environment. even in the most extreme circumstances in temperatures from -25 ° C to 45 ° C. Thanks to integrated two-way audio. you can not only observe but also interact. Just open the EZVIZ APP. start communication and decide if you want to interact or not. With the EZVIZ app. you can view and manage all EZVIZ devices (cameras, alarm sensors and NVRs) from the palm of your hand. Its clean design makes it easy to find all of your cameras. change settings and see what happens with just a few taps.