New versions of the FL mGuard industrial security devices, mGuard RS2000 and RS4000, have upgraded hardware and advanced configuration options that can provide defense-in-depth cybersecurity in more critical applications. They feature an all-in-one firewall, virtual private network (VPN) and routing capability. Thanks to the new metal housing, the new mGuards can operate between -20 °C and +60 °C. The RS4000 is currently awaiting UL Class I, Div. 2 approval.