Robustel R3000 Alternative — LINBLENET T300-390 Industrial Router

Side by side

	Robustel R3000	LINBLENET T300-390
Cellular	4G / LTE	4G / 5G options
Ethernet	2 × 100 Mbps (1 WAN + 1 LAN)	5 × 100 Mbps
Serial	2 × RS-232 or RS-232 + RS-485	RS-232 / RS-485 — configurable on the same unit
SIM	2 × Mini	2 slots, automatic failover (single-standby) — also runs on one SIM
SIM form factor	Plug-in	Plug-in or solder-down (chip) SIM
MOQ / delivery	—	MOQ 1 unit · 5–7 working days from stock

Competitor specifications as published by the vendor; confirm the exact SKU on your BOM, as regional variants differ.

What carries over — and what to check

What carries over

Dual-SIM with automatic failover — like for like (and both also run on a single SIM)
Serial I/O for field devices on both
Same wiring pattern: RJ45 LAN, serial terminal block, wide DC input

What you gain

5 Ethernet ports vs 2 — the devices that would need a mini-switch on the R3000 connect directly
5G option on the same family when a project needs more uplink
Solder-down (chip) SIM support for vibration and unattended sites
MOQ 1 — run a real evaluation without a project-size commitment
Stock ships in 5–7 working days (industry norm: 4–8 weeks)
Private label from 1 unit; label artwork produced the same day

What to check honestly

Serial count: the R3000 can provide two serial ports; the T300-390 has one configurable port — if your design needs two serial interfaces simultaneously, verify on the bench
Cloud platform: Robustel RCMS is mature; evaluate both if fleet management is central
On dual-SIM: automatic failover is resilience, not a guarantee — the session re-establishes after a switch, and two SIMs on one carrier fail together

The second-source way to try it: keep the Robustel R3000 where it works. Take one LINBLENET T300-390, run your own protocol test on your own bench, and keep it as a fallback for the weeks your main supplier's lead time slips. MOQ is 1 unit and stock ships in 5–7 working days — the industry norm is 4–8 weeks. Nothing to lose, something to fall back on.

Certificates

Certificate	Number	Coverage
CE RED	STS2406071RE	T / D series routers
RoHS	C-DPHTL2505191005E	T / D / M400 series
CE EMC (switches)	DDT-CE25030709-1E01	42 Ethernet switch models

Certificate numbers are verifiable with the issuing bodies. Need a certificate in your own company name? That is an OEM / private-label conversation — we do that from 1 unit.

Run your own test — 1 unit is enough

Tell us the model on your BOM and the market you deploy in. We will confirm the matching configuration, band plan and lead time in writing.

Request the T300-390 datasheet Browse all datasheets →

See full specifications: T300-390

Looking at the Robustel R3000?Compare it with the LINBLENET T300-390.