A DIY security camera kit with a radio AV receiver combines the flexibility of the do-it-yourself approach with the convenience of wireless audio and video transmission.
Live color video allows you to set up surveillance where it's needed without the need for complex wiring.
Radio AV receiver enables you to view the camera's feed on a TV or monitor without needing a dedicated display unit.
Box opened to take photos. Never got around to setting this up in my old place, not needed in current building.