GF-808 Wired Non-visual Single-family Intercom Doorbell % Phone Holders Head circumference size: 48-64mm backrest

Head circumference size: 48-64mm backrest adjustment

Its so easy to use

Bending-resistant design

Front camera: 16MP S5K3P3 1/3

GF-808 Wired Non-visual Single-family Intercom Doorbell % Phone Holders Head circumference size: 48-64mm backrestFunctions: 1. Two way intercom and unlock function. 2. Two core wire connection, four core wire connection with unlock. 3. The door machine is surface mounted design and easy to install. 4. Using new ABS plastic, durable. 5. There is an excellent side tone cancellation circuit, and the intercom sound is clear. 6. Effective intercom distance is more than 100 meters. 7. Easy installation, users can install it by themselves. Power parameters: 1. Audio