Video Door Phone 4.3'' TFT Wired Video Intercom Doorbell System RFID Camera with 2/3/4 Monitor Doorphone for Multi Apartment EM Key Unlock (4M1B)

• With 4 wirs system connection. Using 4-cores cable to connect the camera and monitor.The max distandance is up to 100 meters. Different distance, use different diameter cable, please check the following from to choose correspnding cable.( We will send 5 meters cable to you to test, for the longer cable, need to buy by yourself when installing)
• Multiple ringtones - free switch.The 25 chord ringtones can be switched freely, elegantly and fair-sounding. Both of the ringtones and volume can be adjustable, can meet the original needs of your time. Don't need to worry about can't hear voice or hear it too loud any more.
• SupportTwo-way radio Intercom and Indoor Monitoring.When a visitor ring the bell, the monitor will be activated and show the image outside. Press the answer button, then you can talk to outside, press the answer button again to turn it off. If you do not press the button after conversation is finished or if no one answer the call, the monitor will turn off automatically after 60s.
• IR Night Vision.The outdoor camera build-in 4 IR LED light. With this function, you can see outside no matter day or night. Keep your home more safer.
• This outdoor camera support 500 users, you can reader PFID card to open the door. We will send 2 pieces of management rfid keys, and 5 pieces of user key to you. If you want more, please feel free to contact us!