Doorbell and Video Door Phone Connected -WiFi Wireless Doorbell Smart Door Ring Intercom 2-WayTalk Bell Gold Highlights Brand Generic WiFi Wireless Doorbell Smart Door Ring Intercom 2-WayTalk Bell Gold Description: Bell external and internal: Our bell has an external bell and an internal bell. By learning the code to pair the external bell with the internal bell, you can pair an external bell with N internal bells without interfering with each other. Intercom function: our wireless voice doorbell, talk to visitors via two-way voice intercom, you can find out who is visiting your home, talk to them, let them know I'm going, please wait, the speaker can be adjusted, the sound is clear, you can use as a mobile phone. Stable Signal: This doorbell has stable signal and super penetrability, long-distance wireless signal transmission up to 200M strength, and stable signal transmission in a large house, covering a range of up to 200M ( barrier-free, accessible). Low power consumption: low power consumption, standby time for outdoor hood up to six months. The outer cover is powered by 4 alkaline batteries, the battery is easy to replace, and the inner cover is powered by a rechargeable battery, which is also very convenient for charging. Easy to install: The doorbell is easy to install and can be attached to the wall with adhesive tape. It will be installed quickly and will not take too long. Specification: Indoor Unit Input Voltage: 5V 1A Wireless Frequency: 467.6375MHz Transmission Distance: Outdoor Bell: 200m Indoor Bell: 5-50m (without any obstacles) Size Chart: Size: Approx 100x60x14.8mm / 3.9x2.4x0.6 inch Package includes: 1 piece indoor unit 1 piece outdoor unit 1 piece screwdriver 2 piece double-sided tape 1 piece USB charging cable 1 piece user manual (English) Note: Due Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2cm error in size.