Video-intercomsysteem, 2 monitoren, videotelefoon, 7 inch, helder display voor thuis, videodeur, camera, nachtzicht, max. 100 meter1) Using 4 cores cable to connect the camera and monitor. The max distance is up to 100 meters. 2) 700TVL IR Night Vision Camera, equip with a rainproof cover, can be installed outside. 3) Can connect to the electric lock. You can open the door with the indoor monitor. Very convenient! 4) Handsfree Dual way Intercom and Indoor Monitoring. Has 12 songs to chose. 5) Package including 2 unit 7inch indoor monitors+ 1 unit metal outdoor camera.