DS-KH2220 Video Door Phone
Specifications:
Display Parameters
• Display Screen : 7-Inch Colorful TFT LCD
• Display Resolution: 800 x 480
• Operation Method : Physical Button
Audio Parameters
• Audio Input : Built-in Omnidirectional Microphone
• Audio Output : Built-in Loudspeaker
• Audio Quality : Noise Suppression and Echo Cancellation