... DH-2358MA11simply features:1,Wireless Video door phone,3.5 inch display screen,touch button2,Video intercom,unlocking,monitor ... .(4) 83 channels available to ensure the stable intercom(5) perfect automatic frequency adjusting technique,super erroe correction and ... . Indoor monitorSize: 14cm*8.5cm*2.1cmPixel: 450000Screen:3.5 inch TfT-LCDSensitivity:-90dBmStandby Current:20-30mA/3.7VWorking Current ...