Featured here is a 2.4Ghz digital wireless two way intercom video door phone for apartment use. It is comes with an easy to install outdoor camera and a portable indoor monitor. This video door phone flaunts excellent image quality and can be used for monitoring and unlocking the door. 

Specifications:

• 2.4Ghz digital wireless two way intercom video door phone/doorbell for apartments.
• 3.5 inch monitor.
• Applicable for offices, houses, apartments, hotels, buildings and so on.
• Easy to install outdoor camera.
• Portable indoor monitor.
• Can be hung on the wall, or be placed on the desk.
• Excellent image quality.
• For users to monitor and unlock the door.

Features:

• 2.4GHz digital frequency hopping and encryption technology, transmission distance up to 400 meters in free field, robust anti-interference.
• Clear night vision, can capture images in the dark.
• Rain shield for the outdoor camera is available.
• 3.5 or 7 inch TFT color panel for indoor monitor.
• Monitor, unlock, hands-free call and talk.
• 16 chord melodies, melody volume, talk volume are adjustable.
• Date (only one camera with one monitor system) and time shown on the screen.
• Indoor monitor could take pictures automatically or by instruction. It could store up to 100 pics with date and time.
• BL-5J battery of camera and monitor is replaceable and rechargeable.
• Select power supply for outdoor camera:
• 1) If 100~240V power is available near outdoor camera:
• Plug in the power adapter to provide 5V power for outdoor camera all the while, if occasionally the power is down, you can add a BL-5J battery into the outdoor camera, which will last work about 20 days.
• If 100~240vpower is not available near outdoor camera, you can select:   
• A. Add an external solar charger with BL-5J battery into the outdoor camera together. The solar panel must be installed in the place where sunlight directly shines.BL-5J battery can last about 20days for outdoor camera, thus enough sunlight is required within 20days.
• B. Add one external customized 2000Mah mobile power bank, outdoor camera can work about 240days if power bank is fully charged     
• C. Can work about 20days if added a BL-5J battery only.
• Wireless unlock control supports power on and power off unlock.
• One outdoor camera supports up to 4 indoor monitors and vice versa.

Unlock installation:

• E-lock and power of e-lock are not included in this product. Wireless control connects w-lock, shares 12V power adapter with e-lock when it works.
• The system can work together with intelligent lock, electric lock, magnetic lock etc.