Signal expansion is faster and more stable: Placing the paired amplifier between the detector and the host area can effectively help the detector to improve signal strength. Strong signal through walls without blind spots: The wireless signal sent by the auxiliary detector passes through the wall, and the expander is added according to the specific environment to the blind spot of the signal. Wide coverage up to 500 meters: The multi-arc signal covers the corners where the signal is needed, helping to expand the signal sent by the signal detector, so that the host can receive it normally. Detachable antenna: Install the antenna to increase the reception and mission distance of the . Colour:White Material:plastic Package Contents: 1 x wifi Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.