We now have the new MG4 Rechargeable Gateway available. This gateway collects advertising data from iBeacon, Eddystone, Bluetooth LE sensor and other Bluetooth LE devices and then sends it to your server by HTTP(S) or MQTT using WiFi (2.4GHz only).
A unique aspect of this gateway is that it has a rechargeable battery that lasts up to 12 hours so that it can operate during a power outage. The in-built memory stores up to 1080 records avoiding data loss during power and/or network loss.