Product Details
4" B/W video door phone with handset Model:MC-528F21 FeaturesSurface-mounted , 4 inch CRT, handsetMonitor, unlockVolume/contrast/Brightness adjustable SpecificationsModelMC-528F21Display screen 4 inch CRTResolution > 400 TV linesPanel MaterialPlasticsScan frequency 15,625Hz(H) × 50Hz(V)Power voltage DC 16~18VVideo input 75V 1Vp-pPower consumption 1.5w ~12 wWiring mode 4 wires,polarAmbient temperature-10°C ~ 40°CDimension (mm) 202(W)×230(H)×48(DWeight (kg) 1.26