video door phone of hands free video unit(AVC-38R01B02):

4" flat CRT display screen
IP44 waterproof and damage-proof outdoor unit. 
Outdoor unit is with pinhole B/W CMOS camera. 
Outdoor camera with rain shade can avoid direct sunshine. 
Night vision. 
2-wire connection
Hands-free intercommunication. 
Monitoring the outdoor. 
Electric-controlled unlocking. 
Brightness, chroma and volume adjustable. 
Enclosed an adapter and 15m cable for DIY installation.

hands free video door phoneunit