What are his/her requirements...i.e;
-Max Run length? (Distance to furthest camera from receiver)
-Number of Cameras?
-B&W or Colour cameras?
-Constant Recording &/or Time-lapse(instead of 24f/s, is less...strobe affect...uses less storage)
Pro's of Wireless cameras;
-Don't have to run signal cables
-Easy to re-position.
Con's;
-Have to individually power each camera(instead of having just the receiver powered by a UPS and on-powering the cameras)
-Interference by other wireless devices such as cordless phones.
-Higher chance of signal interception/snooping