Expandable Home Intercom System with 3
Channels: Supports multiple indoor and outdoor units. Use A/B/C channels to talk, call all units on the same channel, or switch channels for privacy.
Waterproof Outdoor Intercom with Custom Alerts: IP44 waterproof outdoor intercom built for rain and outdoor use. Indoor unit offers 3 volume levels, 20 ringtones, and low-battery alerts.