Here is another doorbell that lets you monitor what’s happening at your door. The X5 Smart WiFi Doorbell comes with iOS/Android app connectivity. You will be able to see your guests and chat with them easily. The device also has night vision. The battery life lasts up to 9 months.
The X5 doorbell has 1080p resolution. It supports TF cards up to 128 GB. You can order it for under $30 at this time.