ATOP SE5901B Cellular Serial to Ethernet Device Server
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The ATOP SE5901B is a 4G LTE Cat 4 cellular router and serial gateway that connects one RS-232/485 device, or two serial ports on the IO version, to Ethernet and the internet. It has one 10/100/1000BASE-T(X) RJ45 port, one SIM slot and IPsec VPN with up to 37.9 Mbps software-assisted AES encryption, runs on 9-48 VDC and operates from -40°C to +70°C.
Cellular4G LTE Cat 4, single SIM, with VPN router functions
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- Ships from the UK
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- Manufacturer's warranty
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Description
Providing connectivity for the Internet of Things
SE5901B, ATOP’s Industrial Serial to Ethernet and Cellular Gateway/Router is a high-performance, cost effective gateway for serial signal communications; allowing almost any serial device to be connected to Ethernet network and providing connectivity to the world and at the same time protecting your network from intrusions. Its powerful CPU provides up to 37.9Mbps* software-assisted AES encryption for protecting your data flow through the Internet with a secure IPsec VPN tunnel.
SE5901B specifications
| Cellular | 4G LTE Cat 4 |
|---|---|
| SIM Slots | 1 |
| GPS | Optional (-GPS codes) |
| RJ45 Ports | 1 × 10/100/1000BASE-T(X) |
| Serial Ports | 1 (2 on IO versions) |
| Serial Interface | 1 × RS-232/RS-485 on DB9; IO versions: 1 × software-selectable RS-485/RS-232 plus 1 × RS-232 on a TB14 terminal block |
| Digital I/O | 2 digital inputs, 2 digital outputs (IO versions) |
| VPN | IPsec, OpenVPN, PPTP |
| VPN Throughput | Up to 37.9 Mbps software-assisted AES encryption |
| Router Functions | Port forwarding, NAT, SMS management |
| Serial Server Modes | TCP Server (4/VCOM), TCP Client (2/VCOM), UDP (4 ranges) |
| Protocols | VirtualCOM, Reverse Telnet; Modbus TCP/RTU/ASCII gateway and concentrator functions |
| Battery Function | Available on -B codes |
| Input Voltage | 9-48 VDC |
| EMC Protection | Industrial |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Ingress Protection | IP30 |
| Mounting | DIN-rail |
| 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 SE5901B series. ATOP's brochure lists: SE5901B-4G (one RS-232/RS-485 port on DB9, no I/O); SE5901B-IO-4G (TB14 terminal block with one software-selectable RS-485/RS-232 port plus one RS-232 port, and 2 DI / 2 DO); SE5901B-IO-4G-GPS (adds GPS); SE5901B-4G-B, SE5901B-IO-4G-B and SE5901B-IO-4G-GPS-B (add a battery function); and SE5901B-D3G, which the brochure does not describe further. No EU/US band split is listed. Pick IO if you need the second serial port or digital I/O, GPS for location, and a -B code if you need ATOP's battery function. A programmable SE5901B-SDK also exists.
Typical applications for the SE5901B
- Backhauling IO5202 remote I/O or other RS-485 field devices to a cloud server over 4G
- Secure remote access to serial PLCs and RTUs through an IPsec or OpenVPN tunnel
- Remote sites needing a cellular router and serial gateway in one DIN-rail unit
- SMS-based management of unmanned remote stations
- Modbus RTU devices polled over cellular by a Modbus TCP master
- Tracking relocatable equipment with the -GPS versions
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SE5901B — frequently asked questions
What is the difference between the SE5901B and the SE5201B?
The SE5901B uses LTE Cat 4 with a single SIM and one 10/100/1000 RJ45 port, adds router functions such as NAT and port forwarding, and operates from -40°C to +70°C. The SE5201B-C1 and -M1 use LTE Cat 1 or Cat M1, with two 10/100 RJ45 ports, up to two SIMs and a -30°C to +75°C rating.
What does the IO version add?
SE5901B-IO codes use a TB14 terminal block carrying one software-selectable RS-485/RS-232 port plus one RS-232 port, and add 2 digital inputs and 2 digital outputs. The standard SE5901B-4G has one RS-232/RS-485 port on DB9.
How fast is its VPN encryption?
ATOP quotes up to 37.9 Mbps of software-assisted AES encryption for IPsec VPN tunnels. OpenVPN and PPTP are also listed.
What does the -B suffix mean?
ATOP lists the -B codes (SE5901B-4G-B, SE5901B-IO-4G-B and SE5901B-IO-4G-GPS-B) with a battery function. The documents do not give battery capacity or hold-up time.
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 MB5901B.
What power and temperature ratings does it have?
It runs on 9-48 VDC and operates from -40°C to +70°C, with storage from -40°C to +85°C, in an IP30 DIN-rail housing.
How much does the ATOP SE5901B Cellular Serial to Ethernet Device Server cost in the UK?
The ATOP SE5901B 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 SE5901B Cellular Serial to Ethernet Device Server?
The ATOP SE5901B 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.
