10 Use Cases for the InHand IR302 4G Router Leave a comment

InHand IR302 4G router

The InHand IR302 (IR302-FQ58-WLAN-S) is a compact LTE Cat 4 industrial router with dual SIM slots, two switchable 10/100 Ethernet ports, 2.4 GHz Wi-Fi and an RS232 serial port. It measures 98.3 x 92 x 24 mm and draws roughly 100 mA to 120 mA at 12 V in normal operation. That combination puts it in a specific place in the market. It is not a high-throughput 5G gateway. It is a low-cost, low-power, standards-certified box for connecting one or two devices at an unattended site and keeping them online.

Below are ten deployments where the IR302 feature set does real work, and a short note on where it runs out of road.

1. Lift and elevator remote maintenance

Lift controllers sit in machine rooms with no structured cabling and no line of sight to a comms cabinet. The IR302 solves the backhaul with cellular and solves the interface with its RS232 port. Many controller emergency and diagnostic interfaces still present as serial. The IR302 DTU function handles TCP and UDP transparent transmission, so serial frames from the controller reach a remote server without a protocol converter in the middle.

Dual SIM matters here. Machine rooms are often at the top or bottom of a concrete shaft. If the primary network drops, heartbeat detection triggers an auto-redial, and dual SIM failover moves the session to the second carrier. Combine that with a fixed IP SIM and the maintenance team can reach the router inbound, without waiting for it to call home.

2. EV charge point connectivity

Charge points need three things from a router: a wide DC input, a small footprint inside the pedestal, and a connection that stays up long enough for OCPP sessions to complete. The IR302 accepts 9 V to 36 V DC through a 2-pin industrial terminal with over-current and reverse polarity protection, so it runs directly from the charger auxiliary supply. It fits on a DIN rail or a panel bracket inside the enclosure.

Enclosure temperatures swing hard. The IR302 operates from -35 °C to +70 °C in its normal range, and -40 °C to +75 °C in the extended range. Traffic alarms are useful here too. The router raises an alarm on a data traffic threshold, which flags a charge point that has started talking far more than it should. For more on the network side, see our guide to EV charging connectivity.

3. Water and wastewater pumping stations

This is the clearest fit for the RS232 variant. The IR302 bridges Modbus RTU to Modbus TCP in the router itself. A pump controller or flow meter speaking Modbus RTU over serial is presented to the SCADA head end as a Modbus TCP slave. No separate protocol gateway, no PC in the kiosk.

Pumping stations are unattended by definition, so the reliability stack carries weight. The embedded watchdog recovers the device after a fault, VRRP provides a hot standby path where a second router is fitted, and link detection sends heartbeat packets and redials on loss. Configure all of it in the web GUI before the site visit, not after.

4. ATMs, vending machines and unattended retail

Cash machines and vending units want one Ethernet drop and a network that does not need attention. The IR302 gives you IP passthrough, so the ATM or vending controller can take the cellular WAN IP directly and terminate its own encrypted session upstream. Where the payment device expects to sit behind NAT instead, port mapping and virtual IP mapping handle it.

The security feature set is deeper than the price suggests: an SPI firewall, anti-DoS, ACLs, URL filtering and IP-MAC binding, plus CA certificate support. The IR302 also carries IEC 62443 certification, which is worth citing when an estate owner asks what industrial security standard the endpoint meets.

5. Retail POS and broadband failover for small sites

Both Ethernet ports are switchable between WAN and LAN. Set one as WAN, feed it from the site broadband router, and the IR302 sits behind it as an automatic failover path. When the wired link drops, link detection catches it and the cellular connection takes over. Add VRRP where the site runs two routers and the switch needs a single gateway address to point at.

Wi-Fi is optional on the IR302 and present on the WLAN variant. It is 2.4 GHz 802.11 b/g/n at up to 150 Mbps, in AP or Client mode. That is enough for a handheld scanner, a card terminal or a back-office laptop. It is not enough for a shop floor full of tablets, and it is not Wi-Fi 5 or Wi-Fi 6. Size it honestly.

6. Building sub-metering and energy monitoring

Sub-meters in plant rooms and riser cupboards almost always speak Modbus RTU over RS485 or RS232. Where the meter presents RS232, the IR302 serial port takes it straight in and the Modbus RTU to Modbus TCP bridge exposes the registers to an energy management platform over cellular.

The traffic management features earn their place on metering estates. The IR302 tracks traffic statistics against a data threshold and raises a traffic alarm when the site exceeds it. On a hundred-site rollout with pooled data, that alarm is what stops one misbehaving meter poller from eating the pool.

7. Standby generators and plant monitoring

A standby genset spends most of its life doing nothing, watched by a controller that reports run hours, fuel level and fault codes. The router is powered from the same 24 V battery bank as the controller, which the 9 V to 36 V input handles without a step-down converter. Working power is 100 mA to 120 mA at 12 V, with a 190 mA peak, so it will not meaningfully load a battery on float charge.

Dial-on-demand is the feature that matters here. The IR302 can bring the cellular link up on data or on SMS activation rather than holding a session open around the clock. On a low-usage asset with a small data bundle, that changes the running cost of the site.

8. Construction sites and temporary connectivity

Site cabins need a network today, on a site that has no fixed line and will not have one before the project ends. The IR302 gives cellular WAN, a LAN port for a switch, and a 2.4 GHz access point for phones and tablets in the cabin. The panel mounting kit ships in the standard package, so it can go straight onto a plywood backboard.

The router is rated IP30, which means it needs an enclosure if it is going anywhere with dust or water. Shock, vibration and free fall are tested to IEC 60068-2-27, IEC 60068-2-6 and IEC 60068-2-32, so the unit itself survives a rough site.

9. Digital signage and kiosks

Signage players fail quietly. A screen shows the last cached frame for a week and nobody notices. The IR302 alarm set covers this: it raises alarms on system restart, on LAN port online and offline transitions, on data traffic thresholds and on SIM card failure. A player that has stopped pulling content trips the traffic alarm long before somebody walks past the screen.

Remote recovery is the other half. SNMP v1, v2c and v3 with TRAP feed a monitoring platform, and SMS status query and restart give a way in when the IP path is gone. InHand Device Manager provides cloud configuration and firmware updates across the estate.

10. Vehicles, machinery and mobile plant

The IR302 holds E-Mark approval, which is the certification that governs electrical equipment installed in road vehicles. Together with the 9 V to 36 V DC input, that makes it viable in a vehicle or on mobile plant running a 12 V or 24 V electrical system. Reverse polarity and over-current protection cover the realities of vehicle wiring.

Note the limit. The IR302 has no GNSS receiver. If the application needs position as well as connectivity, this is the wrong device and you want a router or telematics gateway with GPS on board.

What the IR302 is not

Honest limits, because specifying the wrong box costs more than buying the right one.

• Not a MIMO device on the Europe SKU: the EU and APAC models carry a single SMA cellular antenna connector. Only the North America models fit two. Expect Cat 4 single-antenna performance, not 2×2 MIMO throughput.
• Not high throughput: LTE Cat 4 and 10/100 Ethernet. It is a telemetry and single-device router, not a site uplink for a busy office.
• Not RS485: the optional serial interface is RS232. RS485 devices need a converter or a different router.
• Not serial and I/O at once: the optional interface is either 1 x RS232 or 2 x configurable digital I/O. The WLAN-S variant we stock is the serial one.
• No user-configurable MQTT publisher: the IR302 does TCP and UDP transparent transmission, TCP server mode and the Modbus bridge. The Device Manager management channel runs over MQTT, but that is InHand’s own transport. You cannot point the router at your own broker and publish telemetry from it.
• Static routing only, IPv4 only: there is no OSPF, BGP or RIP. Dynamic routing estates need a different class of device.

Getting the deployment right

Three things decide whether an IR302 rollout goes smoothly. First, the SIM. Standard consumer and business SIMs sit behind carrier-grade NAT, so inbound access is impossible without a middleman. A fixed IP SIM removes that constraint and lets an engineer reach the router directly over VPN. Second, the antenna. The stub antenna in the box is fine on a bench and poor inside a metal enclosure. Move to an external antenna on a short low-loss run wherever the router lives in a cabinet. Third, the VPN. The IR302 supports IPsec, OpenVPN, WireGuard, ZeroTier, GRE, PPTP and L2TP, so pick the one your head end already terminates rather than the one the datasheet lists first.

InHand Device Manager: running an estate rather than a router

Every use case above assumes the router is somewhere you do not want to drive to. That assumption only holds if you can see the device and change it remotely. InHand Device Manager is the cloud platform that does this for InHand routers and gateways, and the IR302 belongs to the IR300 series that it supports. The portal is at iot.inhandnetworks.com.

The management channel runs over MQTT, which matters more than it sounds. MQTT is lightweight and tolerates high latency and poor bandwidth. A router on a weak cellular signal at the bottom of a lift shaft still reports in.

What Device Manager gives you

• Remote web access: the router’s own web GUI opens through the portal, exactly as it would on-site. This is the feature that removes engineer visits for ad-hoc configuration changes.
• Batch firmware upgrades: push firmware across a group of devices as a managed task, with progress tracked per device. On a hundred-site estate this is the difference between a project and a year.
• Batch configuration dispatch: send a config change to a group, with task distribution management and remote reboot control.
• Event alerts: online and offline transitions, traffic alarms, dual-SIM switching events, link backup events and interface up or down. The dual-SIM switching alert is worth calling out, because it tells you a site has failed over to its secondary carrier without anybody noticing.
• Device information: serial number, model, firmware version, configuration status, signal strength, IMSI, IMEI and ICCID in one view.
• Statistical analysis: traffic usage per device, online status over time, and cellular signal quality across several dimensions.
• GIS map: device locations plotted and tracked.
• Grouping and role-based access: group devices by site, region or customer, and set per-user permissions on each group.
• Log viewing: pull device logs from the portal for diagnosis before anybody travels.

Mapping the platform back to the ten use cases

The pairing is direct. On lifts and pumping stations, remote web access is what turns a Modbus bridge misconfiguration from a site visit into a five-minute fix. On EV charge points and metering estates, the traffic alarm catches the runaway data consumer before the pooled bundle is gone. On signage and vending, the online and offline event alert is the failure notice you would otherwise never get. On any dual-SIM deployment, the SIM switching alert tells you your primary carrier is failing at that location, which is information you can take to the network operator.

How devices get enrolled

Enrolment starts on the device, not in the portal. Register an account at the portal, then on the IR302 web GUI go to Services, then Device Manager. Set the service type to Device Manager, set the server to iot.inhandnetworks.com, and enter the email address you registered with. Apply and save. When the router shows connected, it appears on the Gateways page in the portal automatically. You can also pre-create a gateway record from the portal using the device serial number, which sits on the nameplate and under the system status page. The record shows offline until the router configuration is applied.

One practical note. Menu paths differ across the InHand range and can move between firmware versions. Check the path on the firmware you are actually running rather than the one in an older manual.

Device Manager, InConnect and DeviceLive

InHand runs several cloud services and the names look interchangeable. They are not. Device Manager is the fleet management platform: inventory, configuration, firmware, alerts and remote GUI access. InConnect is the secure remote access service for reaching devices behind the router. DeviceLive and InCloud Manager sit elsewhere in the portfolio again. If somebody in your organisation says “the InHand cloud”, establish which one they mean before you plan the deployment around it.

A closing point on cost and control. Cloud management platforms are convenient until they are the only way in. Whatever you do with Device Manager, keep a route to the router that does not depend on it. A fixed IP SIM and a VPN tunnel you terminate yourself will still be there when a portal is down or an account has lapsed.

Where to go next

Read the full specification and check stock on the InHand IR302-FQ58-WLAN-S 4G router page. If you are pairing it with connectivity, our IoT SIM cards and fixed IP SIM guide cover the options. For cabinet installations, browse our 4G antennas. If you are still choosing between platforms, our explainer on VPNs on cellular routers is a good place to start. Everything is held in UK stock with next-working-day delivery, and our UK-based technical support team can talk through a specific deployment. Call us on 0300 124 6181.