ATOP SE5201B-M1 Cellular Serial to Ethernet Device Server
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The ATOP SE5201B-M1 is a DIN-rail cellular serial server for low-bandwidth, low-power IoT links, using LTE Cat M1 with LTE Cat NB2 (NB-IoT) and EGPRS support under 3GPP Release 14. It connects one RS-232/485 device, has two 10/100BASE-T(X) RJ45 ports, dual SIM failover and schedulable power management, runs on 9-48 VDC and operates from -30°C to +75°C.
CellularLTE Cat M1 / LTE Cat NB2 / EGPRS (3GPP Release 14), dual SIM
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- 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
ATOP SE5201B-M1 IoT gateway offers multi-mode connectivity, supporting the 3GPP Release 14 protocol standards (LTE Cat M1/LTE Cat NB2/EGPRS). In an LTE Cat M1 network, it can achieve a maximum uplink speed of 1119 kbps and a maximum downlink speed of 588 kbps. Featuring low standby power consumption, schedulable power management, high EMC protection, wide-temperature operation, dual SIM failover, and rugged metal housing, this gateway is ideal for IoT applications that demand environmental resilience, redundancy, and power efficiency.
SE5201B-M1 specifications
| Cellular | LTE Cat M1, LTE Cat NB2 (NB-IoT), EGPRS; 3GPP Release 14 |
|---|---|
| Cellular Data Rate | LTE Cat M1: max 1119 kbps uplink, 588 kbps downlink |
| SIM Slots | 2, with dual SIM failover |
| RJ45 Ports | 2 × 10/100BASE-T(X) |
| Serial Ports | 1 |
| Serial Interface | RS-232 / RS-485 |
| Serial Connector | DB9 (SE5201B-M1-DB) or terminal block (SE5201B-M1-TB) |
| 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 | Low standby power, schedulable power management |
| 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?
ATOP's brochure lists two codes: SE5201B-M1-DB with a DB9 serial connector and SE5201B-M1-TB with a terminal block. No EU/US or GPS split is listed for the M1. Choose the M1 where your SIM provider offers LTE-M or NB-IoT service and data volumes are small, for example periodic meter readings; choose the SE5201B-C1 for a standard LTE Cat 1 data service or where you need GPS.
Typical applications for the SE5201B-M1
- Battery or solar-powered telemetry using scheduled power management
- Periodic meter and sensor reading over LTE-M or NB-IoT
- Remote RTUs needing dual-SIM failover for link resilience
- Environmental monitoring stations without a fixed line
- Modbus RTU devices reported to a central Modbus TCP system over cellular
- Utility and water outstations in outdoor cabinets rated -30°C to +75°C
Complete the stack
Products that work with this one — connect it, power it, and get it online.
SE5201B-M1 — frequently asked questions
What is the difference between the SE5201B-M1 and the SE5201B-C1?
The M1 uses LTE Cat M1 with NB-IoT (Cat NB2) and EGPRS support, aimed at low-data, low-power links, and has two SIM slots with failover. The C1 uses LTE Cat 1, comes in EU and US versions and offers GPS options. Both share the two RJ45 ports, one RS-232/485 port, 9-48 VDC input and -30°C to +75°C rating.
What data rates does it achieve?
ATOP quotes a maximum of 1119 kbps uplink and 588 kbps downlink on an LTE Cat M1 network.
Does it support dual SIM?
Yes. It has two SIM slots with dual SIM failover.
Is it suitable for battery or solar power?
Yes. ATOP lists low standby power consumption and schedulable power management, and the brochure describes the SE5201B as a super-low power consumption LTE gateway 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.
Which serial connector version should I choose?
SE5201B-M1-DB has a DB9 connector and SE5201B-M1-TB a terminal block. Both carry one RS-232/RS-485 port.
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-M1 Cellular Serial to Ethernet Device Server cost in the UK?
The ATOP SE5201B-M1 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-M1 Cellular Serial to Ethernet Device Server?
The ATOP SE5201B-M1 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.
