WSDCAM 2.4 inch LCD Digital Doorbell 90 Door Eye Doorbell Camera Viewer Electronic Peephole Viewer Outdoor Visual Doorbell Function Operation: 1. Power on/off: when preing power key", the indoor part will power on, keep on preing power key"for3seconds, the device will power off. 2. Review photo: In power on mode, pre"left key"or"right key"to review photos. 3. Delete all photos: in power on mode or when reviewing photos, pre"left key"for three seconds to delete all photos in memory. 4. Delete single photo: when reviewing photos, pre"right key"for three seconds to delete one photo in memory. 5. Set power off time: In power on mode, pre"right key"for three seconds to select the power off time :15s/25s/off. Specification: Condition: 100% Brand NewItem Type: Smart Door ViewerColor: As Pictures ShownMaterial: ABS PlasticScreen Size: Approx. 2.4inScreen Resolution: 320x240Sensor: 0.3MP CMOS active digital image sensorViewing Angle: 90 Motion Detection: Not SupportedTaking Pictures: SupportPower supply: 600mAhDoorbell Function: Not SupportedStorage Method: circular storageNight Vision Function: SupportApplicable Door Hole: Approx. 14-28mmDoor Panel Thickne: Approx. 35 - 120mm AUTOMATICALLY TAKING PHOTOS >>> Pre 'doorbell key', the device will power on and take photos. You can also take photos inside house when you see someone specious outside the door. 2.4 INCH LCD SCREEN & 90 ANGLE VIEWER >>> You can see the outside scene clearly by 2.4inch high-definition LCD screen, 90 Wide angle vision let you see more. 6 MONTHS LONG STANDBY TIME > Ultra-low power consumption design<br />> Built-in 600mAh lithium battery and easily charged by USB. With low power consumption and long standby time in energy-saving<br />> Only be charge for 3-5hours, can work for 6 months.