CRONY TL-AH708-B3 Tuya Smart wireless video door phone Wireless Video Intercom System Wire Free Doorbell Camera with 7" Touch Screen Monitor 1080P HD Door bell Wire free CRONY video intercom system doorbell with camera and monitor 160 wide angel bell Real-timenotifications Built-in rechargeable battery Provides security provides a sense of security and safety provides peace of mind and security ability to talk to delivery guys remotely ability to remotely unlock door release and view snapshot. This TL-AH708 wireless intercom system is perfect for anyone who wants to replace bulky wired intercom in a renovated house or those who are moving into a spacious villa and want to ditch complicated wiring to ensure the beauty of the House. No cable no hard set up! ATTENTION: Available DC supply voltage range: 8-36V Available AC supply voltage range: 8-24V Please confirm the working voltage of your house before connecting. If the working voltage of your house exceeds the above range please DO NOconnect the doorbell camera with AC/DC directly remember to use the corresponding specifcation adapter to connet it otherwise the doorbellcamera will be damaged. Wireless unlocking module The TL-AH708 features a 5000 mAh rechargeable lithium battery. The standby time can reach up to 90 days with the smart power-savingfunctionality. Two charging methods convenient and fast. - Use the power adapter to charge without removing the battery - Easily remove the battery and charge the battery separately ATTENTION: The outdoor unit shall stand by for 3 months in non monitoring mode.However the indoor unit consumes fast powerso we advise the monitor needs power supply all the time.