Product introduction(1) 7-inch high-definition digital LCD display, with camera, video, visitor record and calendar functions.(3) The indoor display can take pictures manually or automatically, leave a message, ring back tones, and support up to 32G TF card.(4) Indoor unit with surveillance, walkie-talkie, unlocking, taking photos or video playback.(5) 16 ringtones to choose from, multi-language OSD menu, the system supports 6 different languages: English, Russian, French, Spanish, German and simplified Chinese(6) The indoor display can support the connection of 5 mobile phone APP users, and the mobile phone can be monitored and unlocked. it can also support communication between visitors and Tuya Smart APP, which means you can talk to them anytime, anywhere.(7) The indoor monitor can be connected to wireless WIFI .(8) You can manually take pictures, video and unlock functions on the mobile APP.(9) Outdoor anti-oxidation and wear-resistant unit, with rain cover, wall installation is more convenient.(10) The outdoor unit uses 1080P HD cameras.(11) It can be directly connected to NO electric lock, with unlock delay setting.(12) Equipped with power supply and terminal line, users can install it by themselves.(13) It can support 1 to 1 and 2 to 1, independent one-to-one call intercom.(14) The indoor monitor can be directly connected to the outdoor unit through a 4-core wire.Note: For different outdoor unit types, functions and accessories are different.