Battery Operated Wireless Intercom, Indoor Wireless Intercom, Wireless Intercom, Wi Smart Wireless Voice 2 Way Intercom Doorbell Control System

Low power consumption, long standby time for outdoor doorbell up to 4 months. Outdoor doorbell paired with indoor doorbell learning its code, 1 outdoor doorbell can be paired with 2 indoor doorbells and no interference between them. The frequency of use of this product complies with national regulations and will not cause harmful electromagnetic interference, which is universal worldwide. Long working time, the maximum open dnce can reach 200 m/656.2 feet. Large adjustable speaker, clear voice, can be used as a mobile intercom.