1. Support remote video calls 2. Support voice change, female voice to male voice 3. Easy to install, can be pasted, can be punched 4. Support up to 8 family members to use at the same time Details 1. Scan the QR code in the instruction manual with your mobile phone to download the APP; 2. Open the mobile APP, connect the mobile phone to the doorbell hotspot, and then connect the doorbell to the 2.4GHz router WiFi , and the setting is successful; 3. Install and fix the doorbell and receiver; 4. When the doorbell rings, check it directly on the mobile phone 5. Only supports mobile APP, cannot be used on computers, tablets, and laptops. Colour:White Material:Plastic Package Contents: 1x Doorbell unit 1x Indoor ding- unit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.