2.4 inch LCD screen Approval certificate:CE,FCC,RoHS. Low power consumption: 2xAA batteries support 1500 peeps and no standby power loss. Volume can be adjusted;32 ringttones can be selected. Reminding the user to change new batteries when battery power is low. Convenient installation, replacement of the battery without removing the host and cat's eye, direct open the host plane battery cover. Using the digital camera chip and security lens, 300000 pixels, much clearer image. Wider view angle:120 degree. Easy operation: just press the button (image displayed immediately,video automatic switched off in 15 seconds),so convenient for children and the elderly. 15S automatic shutdown, users need not worry about battery runs out quickly if forgetting shutdown. No shadow can be seen from outside, so as to protect privacy of the house owners. Quick start:just push the button, without waiting, image displayed immediately. Resolution image: 240*RGB*320 Camera pixels: 300000 View angle: 120 degree Door thickness: 35mm-75mm Fits hole rang£º 14mm Power Supply: DC 3V 2 PCS AA batteries Power consumption: ¡Ü0.45W