Contemporary Controls EIGR-C3 : Skorpion Gigabit Cellular VPN Router, Built-in Verizon LTE Modem + Bridge VPN Server, OpenVPN Client + Server, Multicast/Broadcast Pass-Through for BACnet/IP, 10/100/1000 Mbps + 4-Port LAN Switch, UL 508

All EIGR routers share the same 41 mm DIN-rail enclosure, 4-port gigabit LAN switch, stateful firewall, and NAT/PAT/Port Forwarding capabilities. The EIGR-C3 differs in two important ways: built-in Verizon LTE cellular modem for sites without wired internet, and bridge-mode VPN server (10 PC clients with multicast/broadcast pass-through) for BACnet/IP remote access. The wired routers are: EIGR-E/EIGR-EX (no VPN), EIGR-V/EIGR-VX (routed VPN, 15 router + 15 PC clients), and EIGR-VB (bridge-mode VPN, 10 PC clients - same VPN as EIGR-C3 but no cellular). Pick by connectivity (cellular vs wired) and VPN mode (routed vs bridge) for your application.

The EIGR-C3 is Verizon-only. The built-in modem is Verizon-certified for Bands B4 and B13, with a pre-installed Verizon nano-SIM. It is not unlocked and is not compatible with AT&T, T-Mobile, or other carriers. If you need a different carrier, contact us about alternative cellular routers - and verify carrier compatibility before purchasing. The Verizon network was selected for its broad rural and industrial coverage in North America, which fits the typical EIGR-C use case (remote pump stations, traffic cabinets, cell-tower shelters, etc.).

No - antennas are sold separately. The EIGR-C3 provides two SMA female connectors on top of the unit (one for the main cellular antenna, one for receive diversity), but the actual antennas must be ordered separately based on the installation environment. Common choices include indoor magnetic-mount antennas for cabinet-mounted use, outdoor weatherproof omnidirectional antennas for rooftop or pole mounting, and remote-mount antennas with extension cables for sites where the router is buried inside a metal enclosure that blocks the cellular signal. Both antennas (Main and Diversity) should be installed for best performance.

Yes. The EIGR-C3 hardware and pre-installed SIM card do not include cellular data service. You must purchase a Verizon data plan separately, either directly from Verizon (Wireless Business Internet, M2M, IoT plans) or through an M2M reseller / data plan aggregator. M2M plans are typically the right choice for industrial applications - they're priced for low data volumes (suitable for BAS telemetry and remote access) and support the static IP options that simplify VPN deployment. Activation usually takes 24-48 hours after providing the IMEI and pre-installed ICCID to the carrier.

Most VPN implementations use routed mode: VPN clients get IP addresses on a separate subnet, and the VPN server routes traffic between the two. This blocks broadcast and multicast traffic by default - a problem for BACnet/IP, which depends heavily on broadcasts for device discovery (Who-Is/I-Am), and for protocols like KNX/IP and sACN that use multicast. The {model_name} uses bridge mode: VPN clients are bridged directly to the LAN side, receive an IP from the LAN subnet, and can send/receive broadcast and multicast traffic as if physically connected to the LAN. This is the right pick when a remote technician needs to discover BACnet devices on the remote LAN, run Niagara Workbench against a JACE, or use any tool that depends on broadcast traffic.

Yes. The WAN port can be configured as either cellular (using the built-in LTE modem) or gigabit Ethernet (using the RJ-45 WAN port at the top of the unit). Many integrators deploy the EIGR-C3 to sites that have wired internet today but might lose it (or want cellular as a backup option later) - configuring the WAN as wired Ethernet skips the cellular cost while keeping cellular as a future fallback. Note that the EIGR-C3 cannot use cellular and wired simultaneously - it's one or the other at any given time, configured via the web interface.

The EIGR-C3 is rated 0°C to +60°C (+32°F to +140°F), suitable for conditioned indoor panels and most mechanical rooms. For outdoor installations, rooftop enclosures, unconditioned warehouses, refrigerated environments, traffic cabinets in extreme climates, or any panel where ambient temperature can exceed 60°C in summer or drop below 0°C in winter, choose the EIGR-C3X wide-temperature variant (-40°C to +75°C). All other features are identical.

Yes. The EIGR-C3 is UL 508 Listed for Industrial Control Equipment and CSA C22.2 No. 142-M1987 compliant. UL 508-listed components are directly acceptable for use in UL 508A panels without invalidating the panel listing, as long as the device is supplied from a Class 2 limited-energy source per the panel's circuit requirements. Note that the cellular modem operates only on the Verizon network and uses standard FCC Part 15 Class A emissions - no special panel modifications are required.

Yes, but the power requirements are higher than the wired EIGR routers due to the cellular modem. The EIGR-C3 accepts 24 VAC ±10% at 17 VA on a half-wave rectified low-voltage input (the wired EIGR-E/V/VX/VB are only 11 VA), so verify your 24VAC transformer has sufficient capacity before sharing the bus. The DC input accepts 10-36 VDC at 10 W. A second power input is available for redundant power - useful for cellular routers since these are often deployed at sites where uptime matters. The two inputs are independent and can be mixed (for example 24 VAC primary with a 24 VDC battery backup).

The EIPR-V is the predecessor cellular VPN router: 10/100 Mbps ports, USB-attached cellular adapter (user-provided from approved adapter list), OpenVPN client only (RemoteVPN subscription required for VPN). The EIGR-C3 is a complete generational upgrade: gigabit ports, built-in Verizon LTE modem (no external USB adapter, no compatibility checking), OpenVPN bridge-mode server on board (10 PC clients, BACnet/IP-friendly), self-hosted VPN compatible in addition to RemoteVPN. The EIGR-C3 is significantly more capable but also higher power draw (10 W vs 6 W) and Verizon-only. For new deployments, the EIGR-C3 family is generally the right pick.