When your IoT deployment needs cellular connectivity in a compact DIN-rail package, two routers often end up on the shortlist: the InHand IR315 and the Teltonika RUT241. Both are industrial-grade 4G LTE routers built for machine-to-machine applications, but they differ in ways that directly affect your wiring, security posture, and long-term maintenance costs.
Table of Contents
Specification Comparison
| Specification | InHand IR315 | Teltonika RUT241 |
|---|---|---|
| Cellular | 4G LTE Cat 6 (300 Mbps DL / 50 Mbps UL) | 4G LTE Cat 4 (150 Mbps DL / 50 Mbps UL) |
| SIM | Dual-Nano SIM, auto-failover | 1× Mini SIM (2FF) or eSIM variant |
| Ethernet | 5× 10/100 Mbps (1.5kV isolation) | 2× 10/100 Mbps (1 WAN + 1 LAN) |
| Wi-Fi | 802.11b/g/n, 300 Mbps, AP/Client (optional) | 802.11b/g/n, AP/STA, 50 users, WPA3 |
| Serial Ports | RS232 + RS485 (optional) | None |
| Digital I/O | 4× configurable DI/DO (optional) | 1× DI, 1× DO |
| GNSS | GPS/GLONASS/BeiDou/Galileo/QZSS, 2.5m (optional) | None |
| VPN Protocols | IPsec, OpenVPN, WireGuard, ZeroTier, DMVPN, L2TP, GRE | OpenVPN, IPsec, WireGuard, ZeroTier, PPTP, L2TP, GRE, SSTP, DMVPN, Tinc |
| Security Certification | IEC 62443-4-2 SL2, C1D2 | Standard industrial |
| Firewall | SPI, DoS defense, ACL, URL filtering, 802.1X | NAT/NAT-T/DMZ, DDoS prevention, port scan protection |
| CPU | 580 MHz | MediaTek MIPS 24Kc 580 MHz |
| RAM | 128 MB | 128 MB DDR2 |
| Flash Storage | 64 MB SPI | 16 MB SPI |
| Power Input | 9–36V DC | 9–30V DC, <6.5W |
| Operating Temperature | −20°C to +70°C | −40°C to +75°C |
| Dimensions | 127 × 108.2 × 35 mm | 83 × 25 × 74 mm |
| Weight | 454g | 125g |
| Protection Rating | IP30 | IP30 |
| Mounting | DIN-rail + wall | DIN-rail + wall (kits required) |
| Cloud Management | InHand Device Manager (free) | Teltonika RMS |
| Routing | Static + OSPF | Static, BGP, OSPF, RIP, EIGRP, NHRP |
| Industrial Protocols | Modbus RTU-to-TCP bridge, DTU, SNMP v1/v2c/v3 | Modbus TCP, OPC UA, DLMS, MQTT |
| Carrier Certified | Verizon, AT&T, T-Mobile, FCC, PTCRB | AT&T, Verizon, T-Mobile, Uscellular |
| Operating System | InHand Linux | RutOS (OpenWrt-based) |
Cellular Performance: Cat 6 vs Cat 4
The IR315's LTE Cat 6 modem delivers up to 300 Mbps downlink — double the RUT241's Cat 4 ceiling of 150 Mbps. Both share 50 Mbps uplink. For most M2M telemetry and SCADA applications, 150 Mbps is sufficient. The gap matters when the router serves as a primary internet link for a branch site or carries video surveillance traffic alongside telemetry data.
The IR315 also carries dual-Nano SIM slots with auto-failover. Dual SIM gives you carrier redundancy without physically swapping cards — a meaningful advantage for unmanned sites where a technician visit costs more than the router itself. The RUT241 offers a single Mini SIM slot, though an eSIM variant supports up to 7 profiles with auto-switching based on signal strength and data limits.
Ethernet Ports: 5 vs 2
Five Ethernet ports on the IR315 versus two on the RUT241 is the most consequential difference for many deployments. With 5 ports — each configurable as WAN, LAN, or VLAN with 1.5kV isolation — the IR315 connects a PLC, HMI, IP camera, and two additional devices directly. No external switch needed, which means fewer components to fail and less wiring in the cabinet.
The RUT241's 2-port design (1 WAN + 1 LAN) works for single-device endpoints: a vending machine, a remote sensor, or a kiosk. For anything more complex, you are adding an external managed or unmanaged switch — another power supply, another cable run, another point of failure. As we covered in our IR315 deep dive, a typical smart grid RTU cabinet hosts 3–5 networked devices that each need Ethernet.
Serial, I/O, and GNSS
The IR315 offers optional RS232 + RS485 serial ports and 4 configurable digital I/O channels. These interfaces let the router talk directly to legacy PLCs, Modbus sensors, and industrial actuators without protocol converters. The IR315 also functions as a Modbus RTU-to-TCP bridge and supports DTU transparent transmission mode — useful for connecting serial-only equipment to cloud platforms.
The RUT241 has no serial ports. It provides 1 digital input and 1 digital output on the 4-pin power connector. For Modbus connectivity, the RUT241 supports Modbus TCP (server and client modes) and includes an OPC UA client/server — but you lose the direct RS232/RS485 interface that many legacy industrial systems still rely on.
For positioning applications, the IR315 supports optional GNSS covering GPS, GLONASS, BeiDou, Galileo, and QZSS with 2.5m accuracy. The RUT241 has no GNSS capability, which rules it out for fleet telematics and asset tracking deployments.
VPN and Security
Both routers cover the VPN protocol basics — IPsec, OpenVPN, WireGuard, L2TP, and GRE. The RUT241 adds PPTP, SSTP, Tinc, and Stunnel for broader compatibility with legacy infrastructure. The IR315 includes DMVPN and ZeroTier. For most industrial site-to-site and remote access scenarios, either VPN stack handles the job.
Where they diverge is security certification. The IR315 carries IEC 62443-4-2 SL2 certification — the international standard for industrial automation cybersecurity — plus C1D2 hazardous location approval. These certifications matter for energy, water treatment, and transportation deployments where compliance auditors check for specific standards. The IR315 also includes EN 18031 compliance, a newer European radio equipment security regulation.
The RUT241 provides a capable firewall suite: NAT, NAT-T, DMZ, VLAN separation, DDoS prevention, and port scan protection. It supports WPA3 for Wi-Fi security, which the IR315's WPA/WPA2 does not match. For non-regulated deployments, the RUT241's security stack is adequate. But if your project specification calls out IEC 62443, the RUT241 cannot meet that requirement.
For a deeper look at industrial router security practices, see our guide on securing industrial routers with firewall and access control.
Cloud Management
The IR315 ships with InHand Device Manager — a free cloud platform for remote monitoring, batch configuration, and firmware updates. No per-device licensing fees for standard management features. You can monitor signal strength, data usage, and device health across an entire fleet from a single dashboard.
The RUT241 integrates with Teltonika RMS, which offers remote management, VPN provisioning, and data collection. RMS includes credits with device purchase, with additional credits available for advanced features and larger fleets. The RMS ecosystem is mature and well-documented, with a strong community behind the OpenWrt-based RutOS.
Form Factor and Environment
The RUT241 wins on compactness: 83 × 25 × 74 mm at 125g versus the IR315's 127 × 108.2 × 35 mm at 454g. If your enclosure has limited DIN-rail space, the RUT241 fits where the IR315 cannot. The weight difference also matters for vibration-sensitive installations on vehicles and rolling stock.
The RUT241 also has a wider operating temperature range: −40°C to +75°C compared to the IR315's −20°C to +70°C. For outdoor cabinets in regions with extreme cold, the RUT241 has a genuine advantage. Both routers carry IP30 protection and support DIN-rail and wall mounting.
The IR315 counters with a wider power input range: 9–36V DC versus the RUT241's 9–30V DC. Industrial power systems running at 24V or 36V benefit from the IR315's higher ceiling. The IR315 also has 4× the flash storage (64MB vs 16MB), which matters for firmware image size, custom scripts, and local log retention.
Which Router Fits Your Deployment?
- Your cabinet connects 3+ Ethernet devices
- You need RS232 or RS485 serial connectivity for legacy equipment
- Your industry requires IEC 62443-4-2 or C1D2 certification
- You need GNSS positioning for fleet or asset tracking
- Carrier redundancy via dual SIM is critical for uptime
- Your power supply runs at 36V DC
- Enclosure space is the primary constraint
- Your deployment environment sees temperatures below −20°C
- You need OpenWrt-based RutOS for custom scripting and packages
- Connectivity needs are limited to 1–2 Ethernet devices
- You need WPA3 Wi-Fi or support for up to 50 wireless clients
- You prefer the Teltonika RMS management ecosystem
Neither router is universally better — they serve different points on the compact industrial router spectrum. The IR315 is an I/O-rich hub that absorbs multiple devices and serial connections into a single DIN-rail unit. The RUT241 is a minimalist endpoint that prioritizes size, temperature range, and OS flexibility over interface density.
FAQ
Does the InHand IR315 support 5G connectivity?
The IR315's primary variants use 4G LTE Cat 6 with up to 300 Mbps downlink. Some SKUs may offer 5G SA capability depending on the model. Check the specific model number on the InHand product page for cellular capability details.
Can the Teltonika RUT241 replace an external Ethernet switch?
With only 2 Ethernet ports (1 WAN + 1 LAN), the RUT241 cannot serve as a network hub for multiple devices. You will need an external switch for deployments connecting more than one Ethernet device.
Which router has better VPN protocol support?
Both cover the core protocols (IPsec, OpenVPN, WireGuard). The RUT241 adds PPTP, SSTP, Tinc, and Stunnel for legacy compatibility. The IR315 includes DMVPN and ZeroTier. For most industrial deployments, either VPN stack is sufficient.
Is InHand Device Manager free to use?
Yes. InHand Device Manager provides remote monitoring, batch configuration, and firmware management at no additional cost. There are no per-device licensing fees for standard cloud management features.
Bottom Line
The IR315 and RUT241 target different points on the compact router spectrum. The IR315 is an I/O-rich hub router that eliminates external switches and serial converters in multi-device cabinets. The RUT241 is a minimalist endpoint router that fits in the tightest spaces and handles extreme temperatures.
Your deployment architecture — not spec sheet one-upmanship — should drive the choice. Count your Ethernet devices, check your compliance requirements, and measure your enclosure. The right router is the one that fits your cabinet, not the one with the longer feature list.
For more on InHand's industrial router lineup, visit the IR315 product page or explore our dual-SIM failover configuration guide.
