Detailed Product Description

Input power Built-in rechargeable battery, 7.2V DC 9V DC, 1A switching power adaptor Output signal strength about 100 mW Antenna Swivel type 360 degree rotary adjustment and 90degree adjustment Dimension L 142 x W 71 x T 24 mm Available system PAL, NTSC, SECAM Effective range 2.4GHz  Covers an individual room up to 3500 square feet (about 315 square meter), depending on the type and strength of signal source.