7 inch color LCD, wireless, distance 150 meter, for villa and single house Features ... on screen, to know the best communicating distance;4. 2.4 G Frequency-Hopping Spread ... frequency hopping, Strong anti-interference ability;6. Working Distance 150 Meters (No-obstacle);7. Build-in ... within 1 meter Input Power: AC100~ 240V, 50/60Hz Output: DC12V/1A .Installation: Wall mounted Working Distance: 150Meters ...