door viewer, digital door viewer, electronic door viewer DIY product easy installation, easy operation international standard Digital peephole viewer, door viewer, digital door viewer, DIY, easy installation, easy operation Door Device: Surface Mounted 2.8" TFT Resoution: 240X320pixels Power Consumption: Standby:0.08mW, Working:600 mW Power Supply: 4 pcs 1.5V AAA batteries or adapter: DC 6V/500mA ...