Features: Experience smooth communication with our Intercoms Wireless for Home, featuring a 2 in 1 wireless Doorbells and intercom Systems that allows long distances conversation up to 1/2 Mile in open environment. This portable two way voice intercom Doorbells boasts advanced 433MHz wireless connection technology, rechargeable batteries service up to 3 days, and a newly upgraded design with a comfortable plastic+silicone structure. Perfect for families search efficient room to room communication, this device is ideal for parents, caregivers, or anyone needing quick and easy interaction within the home environment. Whether you're coordinating dinner plan from this kitchen to the Patioes or checking in on family member across different floor , this intercom Systems provides reliable connection without the need for WiFi or bluetooth-compatible . With 16 selectable ringtones and adjustable Volumes levels, customize your communication experience while enjoy the convenience of factory pair units ready to use straight out this box. Specifications: Material: ABS Length: about 112mm/4.4inch Width: about 50mm/2inch Package Includes: 1 set Wireless Intercom Systems note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.