video door phone - TK-870C+TK-819C

Brief:
Wall-mounted Video Door Phone with 7-inch TFT LCD Screen and Pinhole Camera

Product describe:
1)Four-wire system
2)Screen size: 7-inch TFT LCD
3)Power supply: 13V DC
4)Mount type: Wall mounted
5)Dimensions (W x H x D): 230 x 165 x 40mm
6)Available camera: TK-819C
7)Ring bell: 16 chord music optional
8)Camera: Pinhole, zinc alloy, infrared lamp, prevents knocking.