Strong Signal & Wide Coverage With 2 external antennas, A9 can provide strong signal & extend the existing Wi Fi coverage to 200 square metres. Also, by optimizing the software & hardware, the anti-interference ability is enhanced, so that A9 can provide stable signal & guarantee the large Wi Fi coverage. One Button Extension Designed with an extending button, A9 can extend the wireless router's Wi Fi immediately by pressing the wireless router's WPS button once, & within 2 minutes, pressing the Range Extender button. Just plug & play & it is easy to set up. Smart Signal LED Indicator Once connected with the existing Wi Fi, It is easy to find the best location for the extender according to the smart Wi Fi signal LED indicator, so that A9 can achieve the best coverage & works better. Key Features Frequency: 2.4 GHz Wireless standards: b/g/n Transfer speed: N300 Dimension: 111 x 56 x 47.7 mm