... is different from the traditional method that use increased the wireless transmitter power (it will produce a strong harmful radiation) ... -enlarge the weak WiFi signal, and during not increasing the wireless transmitter power, expand WiFi signal coverage, safe and ecology, ... x 43mm x 14mm (L x W x H) Wireless RelatedBasic FunctionWireless SwitchSSID Broadcast switchChannel option: 1-14WiFi mode option ...