OnCell 3120-LTE-1 Series

2-port industrial LTE Cat. 1 cellular gateways

Features and Benefits

Dual SIM failover and auto connection recovery for reliable cellular connectivity
Connect legacy RS-232/422/485 serial devices over Ethernet networks
Centralized monitoring and remote access with Moxa Remote Connect (MRC)
Low power consumption (40 mW in standby)

Certifications

Introduction

The OnCell 3120-LTE-1 Series is a range of LTE Cat.1 cellular gateways built for reliable connectivity, easy maintenance, and quick deployment in diverse environments. These gateways deliver stable Serial/Ethernet-to-cellular connections and ensure optimal reliability with GuaranLink cellular auto-recovery.

With MRC Quick Link Ultra, operators gain complete visibility and secure remote control over both the OnCell gateway and its connected end devices, allowing for faster troubleshooting, minimal downtime, and more reliable industrial operations.

Designed for edge applications, the OnCell gateways features power-saving technology that reduces standby consumption to below 40 mW via scheduling control, making them ideal for power-constrained remote applications. Full support for serial interfaces (RS-232/ 422/485) and flexible operation modes (Real COM, Reverse Real COM, RFC 2217, TCP Server/Client, UDP), these gateways ensure seamless compatibility with serial devices. Certification for IECEx, ATEX, and CID2 certifications also make the OnCell gateways suitable for hazardous and demanding applications, such as oil and gas.

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Cellular Standards

LTE Cat. 1
HSPA
UMTS
EDGE
GPRS
GSM
Data Rate

10 MHz bandwidth: 10.2 Mbps DL, 5.2 Mbps UL
Frequency Bands Supported

-EU(-T) models:
LTE Band 1 (2100 MHz) / LTE Band 3 (1800 MHz) / LTE Band 7 (2600 MHz) / LTE Band 8 (900 MHz) / LTE Band 20 (800 MHz) / LTE Band 28A (700 MHz)
UMTS/HSPA 900 MHz / 1800 MHz / 2100 MHz
GSM 900 MHz / 1800 MHz

-AU(-T) models:
LTE Band 1 (2100 MHz) / LTE Band 3 (1800 MHz) / LTE Band 5 (850 MHz) / LTE Band 8 (900 MHz) / LTE Band 9 (1800 MHz) / LTE Band 18 (850 MHz) / LTE Band 19 (850 MHz) / LTE Band 26 (850 MHz) / LTE Band 28 (700 MHz)
UMTS/HSPA 2100 MHz / 850 MHz / 800 MHz / 900 MHz

-US(-T) models:
LTE Band 2 (1900 MHz) / LTE Band 4 (1700MHz (AWS)) / LTE Band 5 (850 MHz) / LTE Band 12 (700 MHz) / LTE Band 13 (700 MHz) / LTE Band 14 (700 MHz) / LTE Band 66 (1700 MHz) / LTE Band 71 (600 MHz)
UMTS/HSPA 1900 MHz / 1700 MHz / 850 MHz
No. of SIMs

2
SIM Format

Nano SIM
Cellular Antenna Connectors

2 x SMA female

10/100BaseT(X) Ports (RJ45 connector)

2
Standards

IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X)

Buttons

Reset button

No. of USB Ports

1
USB Connector

USB Type A
USB Standards

USB 2.0

No. of Ports

1
Connector

DB9 male
Serial Standards

RS-232/422/485
Data Bits

5, 6, 7, 8
Stop Bits

1, 1.5, 2
Parity

None, Even, Odd, Space, Mark
Baudrate

75 bps to 921.6 kbps
Console Port

RS-232 (TxD, RxD, GND), 4-pin header output (115200, n, 8, 1)

RS-232

TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS-422

Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w

Data+, Data-, GND
RS-485-4w

Tx+, Tx-, Rx+, Rx-, GND

Standards

Real COM mode
RFC2217 mode
Reverse Real COM
TCP Server mode
TCP Client mode
UDP mode

LED Indicators

SIGNAL, SYS, LAN1, LAN2, SERIAL

Management

DHCP Server
DDNS
Syslog
Power Saving
Wireless Search Utility
Network Protocols

ARP
Telnet
TCP/IP
UDP
SMTP
SNMPv1/v2c/v3
Security

HTTPS
Time Management

SNTP Client
Tunneling

GRE
VPN

IPsec
OpenVPN

Management

GuaranLink
Send SMS
SMS Remote Control
Moxa Remote Connect (MRC)

Filter

MAC address
Ports
IP address

Features

NAT loopback
Port forwarding

Authentication

PSK/X.509/RSA
Encryption

DES, 3DES, AES, MD5, SHA-1, DH2, DH5
Concurrent VPN Tunnels

5

OpenVPN

OpenVPN (client and server), Tunnel mode (routing) and TAP mode (bridge)
Encryption

Blowfish CBC, DES CBC, DES-EDE3 CBC, AES-128/192/256 CBC
Concurrent VPN Tunnels

5

Input Current

0.8 A (max.)
Input Voltage

9 to 36 VDC
Power Consumption

5 W (typ.)
Power Connector

Terminal block
Reverse Polarity Protection

Supported

Housing

Metal
IP Rating

IP30
Dimensions

128.5 x 26 x 89.1 mm (5.06 x 1.02 x 3.51 in)
Weight

550 g (1.22 lb)
Installation

DIN-rail mounting
Wall mounting (with optional kit)

Operating Temperature

Standard models: 0 to 55°C (32 to 131°F)
Wide temp. models: -30 to 70°C (-22 to 158°F)
Storage Temperature (package included)

-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity

5 to 95% (non-condensing)

EMC

EN 55032/35
EN 61000-6-2/-6-4
EMI

CISPR 32, FCC Part 15B Class A
EMS

IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 10 V/m
IEC 61000-4-4 EFT: Power: 1 kV; Signal: 1 kV
IEC 61000-4-5 Surge: Power: 1 kV; Signal: 1 kV
IEC 61000-4-6 CS: 10 kHz to 150 MHz; Signal: 80 V
IEC 61000-4-8: 30 A/m
Freefall

IEC 60068-2-32
Hazardous Locations

ATEX
IECEx
Class I Division 2
Radio Frequency

PTCRB
FCC ID SLE-LE910CXNF
Radio

NCC: CCAF224G0100T1
KC: R-C-MXA-OnCell-3120
RCM
TELEC
JATE
Carrier Approvals

Verizon
AT&T
Cellular Standards

EN 301 511
EN 301 908-1
EN 62311(MPE SAR)
AS/CA S042
EN 301489-1/-52
Cybersecurity

EN 18031-1
Safety

IEC 60950-1
IEC 62368-1
UL 60950-1
UL 62368-1
Shock

IEC 60068-2-27
Vibration

IEC 60068-2-6
Green Product

RoHS, CRoHS, WEEE

Time

585,775 hrs
Standards

Telcordia Standard SR-332

Warranty Period

5 years
Details

See www.moxa.com/warranty

Download datasheet

Software, Firmware, and Drivers

Name	Type	Checksum	Version	Operating System	Release Date
Firmware for OnCell 3120-LTE-1 Series Download 36.6 MB	Firmware	3E33D5575634370A8176E31C879DEF7C203C8FC51F4996695741A9E7416E716EC64539F2ADA3F85F0CDA887D1BD675456D81F10719EB7CB96D4B846E99DEC098 SHA-512	v2.5.0		Aug 27, 2025 Aug 27, 2025 Release notes
Moxa Remote Connect Suite Software (MRC Client SW) Download 31.5 MB	Software Package	D2C05AAFF32F3AD1F0D58EB69D50EC27EC03A898869694214E7AE7FBA787C2C77B4E32D9DEB63472464DA8C7BAD584DEF68845AB166D7E26C29528F0DD21F54B SHA-512	v4.1.0	Windows 10	Aug 01, 2025 Aug 01, 2025 Release notes
Firmware for OnCell 3120-LTE-1 Series (beta firmware for AU and EU models, HW Rev. 1.0.0) Download 19.2 MB	Firmware	C1966A4DA03EDE8B001C38D58E17062CC018317C8E4AF9C817B839A471E70F23A342920C620D95896D6139E1B178F21C39EED47C4AEFEB71B87B8AA8C7044981 SHA-512	v1.5.3		Apr 08, 2022 Apr 08, 2022 Release notes
Firmware for OnCell 3120-LTE-1 Series (AU and EU models, HW Rev. 1.0.0) Download 16.2 MB	Firmware	FFB2C77CDB582C0244878030217F1A32BC165730D253597B731B62EEEAEE749946EB614D160D4DA409517AC82514827017584845CC9370CDE291B9551E67C32E SHA-512	v1.5		Aug 11, 2021 Aug 11, 2021 Release notes
PComm Lite Serial Communication Tool for Windows Download 1.6 MB	Utility	1033555948012595FB0D4A9EA4949CBEA7E5CE0585383E772935016CA2F171990DB5A10EE0732372AD9293152C6B634DBFA96F19D9EA2B7516845214DF61312E SHA-512	v1.6	Windows 2000 Windows 7 Windows Server 2003 Windows Server 2008 Windows Server 2008 R2 Windows Vista Windows XP	Jul 27, 2021 Jul 27, 2021 Release notes
Windows Driver Manager (for Windows 7, Server 2008, or later)) Download 3.0 MB	Driver	5A370644F196A97F697954A3BDBFE89586C27A9870A49AD456D38CA8FB76729BB453AB42DDFC56E7C7E6A2BCD092D594ED2F844641516407BC1851579427344C SHA-512	v3.2	Windows 10 Windows 7 Windows 8 Windows 8.1 Windows Server 2008 R2 Windows Server 2012 Windows Server 2012 R2 Windows Server 2016 Windows Server 2019	Jul 06, 2020 Jul 06, 2020 Release notes
Library for OnCell 3120-LTE-1 Series Download 31.3 KB	Library	1BAB213BCFEF35AAF0FFD79EF81FBDA1DDA7A01EC43AC31688C815A16DC3753796ED2FA36E67B0624216C5181BC3FB7C16970552FFD508248814BD220F4EAA1C SHA-512	v1.0		Dec 30, 2019 Dec 30, 2019 Release notes

Support Documents

Name	Type	Version	Release Date
Datasheet for OnCell 3120-LTE-1 Series Download 748.0 KB	Datasheet	v1.9	Jan 19, 2026 Jan 19, 2026
FOSS Statement for OnCell 3120-LTE-1 Series Download 2.1 MB	Declaration	v2.5.0	Oct 01, 2025 Oct 01, 2025
Manual for Moxa Remote Connect (MRC) Download 13.4 MB	Manual	v1.2	Oct 01, 2025 Oct 01, 2025
Tech Note: The Security Hardening Guide for OnCell Series Download 725.8 KB	Tech Note	v1.0	Aug 29, 2025 Aug 29, 2025
Manual for OnCell 3120-LTE-1 Series Download 9.5 MB	Manual	v1.5	Aug 15, 2025 Aug 15, 2025
Declaration of Conformity (cybersecurity) for OnCell 3120-LTE-1 Series Download 204.3 KB	Declaration	v1.0	Jul 31, 2025 Jul 31, 2025
Declaration of Conformity (EU/UK) for UC-3100/OnCell 3120 (-EU) Series Download 319.9 KB	Declaration	v1.0	May 16, 2025 May 16, 2025
QIG for OnCell 3120-LTE-1 Series Download 1.0 MB	QIG	v1.3	Mar 10, 2023 Mar 10, 2023

Industrial Network Infrastructure Brochure

Application Note

Remote Access Made Secure and Easy with LTE Cellular Gateways

Available Models (6)

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	Compare OnCell 3120-LTE-1-EU	Compare OnCell 3120-LTE-1-EU-T	Compare OnCell 3120-LTE-1-AU	Compare OnCell 3120-LTE-1-AU-T
Cellular Standard	LTE Cat 1	LTE Cat 1	LTE Cat 1	LTE Cat 1
LTE Band	B1 (2100 MHz) / B3 (1800 MHz) / B7 (2600 MHz) / B8 (900 MHz) / B20 (800 MHz) / B28A (700 MHz)	B1 (2100 MHz) / B3 (1800 MHz) / B7 (2600 MHz) / B8 (900 MHz) / B20 (800 MHz) / B28A (700 MHz)	B1 (2100 MHz) / B3 (1800 MHz) / B5 (850 MHz) / B8 (900 MHz) / B9 (1800 MHz) / B18 (850 MHz) / B19 (850 MHz) / B26 (850 MHz) / B28 (700 MHz)	B1 (2100 MHz) / B3 (1800 MHz) / B5 (850 MHz) / B8 (900 MHz) / B9 (1800 MHz) / B18 (850 MHz) / B19 (850 MHz) / B26 (850 MHz) / B28 (700 MHz)
Operating Temp.	-0 to 55°C	-30 to 70°C	-0 to 55°C	-30 to 70°C
Mounting	Wall, DIN rail	Wall, DIN rail	Wall, DIN rail	Wall, DIN rail
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	Compare OnCell 3120-LTE-1-US	Compare OnCell 3120-LTE-1-US-T
Cellular Standard	LTE Cat 1	LTE Cat 1
LTE Band	B2 (1900 MHz) / B4 (1700 MHz) / B5 (850 MHz) / B12 (700 MHz) / B13 (700 MHz) / B14 (700 MHz) / B66 (1700 MHz) / B71 (600 MHz)	B2 (1900 MHz) / B4 (1700 MHz) / B5 (850 MHz) / B12 (700 MHz) / B13 (700 MHz) / B14 (700 MHz) / B66 (1700 MHz) / B71 (600 MHz)
Operating Temp.	-0 to 55°C	-30 to 70°C
Mounting	Wall, DIN rail	Wall, DIN rail
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