ATOP SE5201B-C1 Cellular Serial to Ethernet Device Server
Request a price
The ATOP SE5201B-C1 is a DIN-rail cellular serial server that links one RS-232/485 device to SCADA or cloud systems over LTE Cat 1. It has two 10/100BASE-T(X) RJ45 ports, up to two SIM slots, VPN, and one digital input and one digital output. It runs on 9-48 VDC with configurable power management for power-limited sites and operates from -30°C to +75°C.
Cellular4G LTE Cat 1, EU or US version, up to 2 SIMs
● Quotes answered within one working day
Available to order · request a quote for price and lead time
Delivery & assurance
- Ships from the UK
- UK & EU delivery, quoted with your price
- Pay by card or invoice
- Manufacturer's warranty
Questions about this product? Call our UK team: 023 9223 3611
Description
The ATOP SE5201B-C1 is a low-power LTE cellular serial gateway that connects RS-232/485 field devices to central systems over the mobile network. It gives serial-only equipment such as meters, PLCs and RTUs a direct cellular path, transporting Modbus and other serial protocols to SCADA or cloud platforms without local fixed lines. A configurable power-management mechanism keeps consumption low for solar or battery installations, while high EMC protection, wide-temperature operation and a rugged metal housing suit harsh industrial and outdoor sites. Typical UK uses include remote utility outstations, environmental telemetry and unmanned plant. The SE5201B-C1 is a compact way to put legacy serial assets onto a secure cellular link. See our cellular serial and Modbus gateways.
Manufacturer datasheet (PDF)
SE5201B-C1 specifications
| Cellular | 4G LTE Cat 1 (EU or US version) |
|---|---|
| SIM Slots | Up to 2, by version |
| GPS | Optional (-GPS codes) |
| RJ45 Ports | 2 × 10/100BASE-T(X) |
| Serial Ports | 1 |
| Serial Interface | RS-232 / RS-485 |
| Serial Connector | DB9 or terminal block, by version |
| Digital I/O | 1 digital input, 1 digital output |
| VPN | Yes |
| Serial Server Modes | TCP Server (4/VCOM), TCP Client (1/VCOM), UDP (8 ranges) |
| Protocols | VirtualCOM, Reverse Telnet; Modbus TCP/RTU/ASCII gateway and concentrator functions |
| Power Management | Configurable power management mechanism to reduce consumption |
| Input Voltage | 9-48 VDC |
| EMC Protection | Industrial |
| Operating Temperature | -30°C to +75°C |
| Storage Temperature | -40°C to +85°C |
| Housing | Metal |
| Ingress Protection | IP30 |
| Mounting | DIN-rail |
| Dimensions | 30 × 136 × 95 mm (L × H × D) |
| Certifications | CE/FCC; UL/EN/IEC (CB) 60950-1 and/or 62368-1 |
Specifications taken from the manufacturer datasheet.
Which version do I need?
This page covers the SE5201B-C1 family. ATOP's brochure lists: SE5201B-C1-DB-EU, SE5201B-C1-DB-US, SE5201B-C1-DB-EU-GPS (a US GPS DB version is also listed), SE5201B-C1-TB-EU, SE5201B-C1-TB-US, SE5201B-C1-TB-EU-GPS and SE5201B-C1-TB-US-GPS. DB means a DB9 serial connector and TB a terminal block. EU and US are the regional LTE versions: UK networks use the European LTE bands, so order an -EU code. -GPS adds a GPS receiver for location. The SE5201B-M1 is the LTE Cat M1 / NB-IoT sibling for low-data links.
Typical applications for the SE5201B-C1
- Remote utility outstations reporting serial meter or RTU data to SCADA
- Environmental telemetry at sites without a fixed line
- Solar or battery-powered installations using the configurable power management
- Unmanned plant with serial PLCs needing a cellular path
- Modbus RTU devices polled over cellular by a central Modbus TCP master
- Asset location on mobile or relocatable equipment with the -GPS versions
Complete the stack
Products that work with this one — connect it, power it, and get it online.
SE5201B-C1 — frequently asked questions
What is the difference between the SE5201B-C1 and the SE5201B-M1?
The C1 uses LTE Cat 1 and comes in EU and US versions with optional GPS; the M1 uses LTE Cat M1 with NB-IoT and EGPRS support, for low-data, low-power links, and has two SIM slots for failover. Both have one RS-232/485 port, two 10/100 RJ45 ports, one DI and one DO, 9-48 VDC input and a -30°C to +75°C rating.
Which version should I order for the UK?
An -EU code, because UK networks use the European LTE bands; the -US codes are the US version. Then pick DB (DB9 serial connector) or TB (terminal block), and add -GPS if you need location data.
Does it support RS-422?
No. ATOP's selection guide lists the serial port as RS-232/RS-485 only, on a DB9 or terminal block connector.
How many SIM cards does it take?
Up to two, depending on version, according to ATOP's wireless appendix.
Is it suitable for solar or battery-powered sites?
ATOP describes the SE5201B as a super-low power consumption LTE gateway with a configurable power management mechanism, intended for power-challenged environments. It accepts 9-48 VDC.
Does it convert Modbus RTU to Modbus TCP?
Not as a listed function. It carries serial data transparently over TCP, UDP, VirtualCOM or Reverse Telnet, which suits most SCADA polling over cellular. For Modbus RTU/ASCII to Modbus TCP conversion ATOP's dedicated model is the MB5201B.
What is the operating temperature range?
-30°C to +75°C operating and -40°C to +85°C storage, in an IP30 DIN-rail housing measuring 30 × 136 × 95 mm.
How much does the ATOP SE5201B-C1 Cellular Serial to Ethernet Device Server cost in the UK?
The ATOP SE5201B-C1 Cellular Serial to Ethernet Device Server is supplied to order and priced on application. Send a quote request and we confirm the price and lead time in writing, usually the same working day. No account is needed. Indiott is a UK distributor invoicing with VAT (PSI Technologies Ltd, VAT GB 730 2340 83).
What is the lead time and delivery cost for the ATOP SE5201B-C1 Cellular Serial to Ethernet Device Server?
The ATOP SE5201B-C1 Cellular Serial to Ethernet Device Server is supplied to order. We confirm the lead time in writing with your quote, before you commit to anything. UK delivery is a flat £14.25 per order ex VAT, whatever the weight or how many items you order. We ship to GB and the EU and provide a VAT invoice with every order.
