First of all, what is two-way audio, and why do you want it? Two-way audio is a feature that allows you to communicate through your security cameras.
The main requirement for two-way audio is that the camera has to have a Wifi connection. The wireless security camera will then be able to use the Wifi to pair with an app on your mobile device. Using the app, you will be able to access a live stream of what the camera sees. At any point, even if the camera uses motion detection, you can access the video footage. Using the same app, you can listen to what is happening on the other side of the camera. If you need to talk to the person on the other side of the camera, you can speak through the two-way speaker.
Catvision Wifi home security camera is one of the newest IP cameras with two way audio to come onto the market, and it promises to be one of the most effective in terms of security.