Smart Wireless Voice 2-Way Intercom Doorbell Access Control System Home Secur FG
1 x Outside Doorbell. 1 x Inner Doorbell. Item Type: Door Bell. Waterproof Level: No Waterproof Function. Outdoor‑bell pair with indoor‑bell by learning its code, 1 outdoor‑bell can paired with 2 indoor‑bells and no interference each other.