NanoBox is the right choice if you are looking for something very robust and stable.
On the one hand NanoBox is an industrial grade Firewall / VPN / Router. In additon it's a embedded device, easily to integrate in a automation environment using it's feature to measure signals, control actors, read out sensor data, etc.
Main-Features:
- Robust aluminium case, fanless
- 2x Fast Ethernet for LAN and WAN
- 1x 802.11 b/g/n WiFi
- GPIOs, SPI, I2C (PhoenixContract - connector terminal)
- 3G/LTE as option