Shenzhen OPIZ Electronics Co., Ltd.

Wireless video door phone features:
Wireless dual communication, monitoring and release door
Inner calling
Capturing image and video
1GB memory card (image storage)
Adjustable brightness, color, contrast and ring volume
Capable to support two outdoor cameras and three indoor monitors
Adjustable talking volume
Changeable chord melody (12 ringtones)
2.4G ISM digital public frequency
2.4-inch TFT LCD screen
Effective range in 300m in free field
On screen display English manual
Backup battery for indoor unit
Temperature: -10 to 70°C
Relative humidity: 45 to 95%
Atmospheric pressure: 86 to 108kPa
Indoor phone power: 4.5V DC/1A
Outdoor station: 5V DC/1A
Standby status: 72 hours
Transmission power: 16 to 20dBm
Outdoor station dimensions: 127 x 95 x 37mm
Indoor phone dimensions: 102.5 x 66.5 x 18mm
Net weight: 300g
Installation: surface-mounted