
Gateways / Routers / Modems
Lantronix NTC-100 Series LTE-M / NB-IoT Industrial Serial Modems
Small 4G LTE Cat M1/NB1 cellular modems that put a single RS232, RS422 or RS485 device on a low-power LTE network, sized for space-constrained industrial and metering installations.
From $129.00
Overview
About the Lantronix NTC-100 Series
The NTC-100 Series is in Last Time Buy status, and Lantronix has published a product discontinuation notice; no successor is named in the source. The NTC-100 (also written NTC100) is a 4G industrial IoT serial modem built on LTE Cat M1 and NB1 (3GPP Release 13), designed to connect legacy serial equipment such as meters, controllers and sensors over low-bandwidth cellular links in tight enclosures.
The modem measures 84 x 50 x 21 mm and weighs about 55 g. A locking 10-pin Nano-Fit connector carries both the 4.5-36 VDC power input and a software-configurable RS-232/RS-422/RS-485 serial port with 15 kV protection, and a micro-B USB 2.0 device port handles local configuration and firmware updates. Peak speeds are 375 Kbps both ways on Cat M1 and 32/70 Kbps on NB1, with EGPRS fallback. LTE coverage spans FDD bands 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20 and 28 plus TDD band 39.
Idle draw is 0.24 W and full load 2 W. Operating modes are PPP and IP. SMS commands can query signal strength, set the APN, reboot the unit or trigger an over-the-air firmware download, secured by sender whitelisting and passwords. The IP40 housing operates from -30°C to +70°C and mounts on a wall or a TH35 DIN rail with the included bracket.
Key capabilities
- LTE Cat M1 and NB1
- Low-power LTE with 375 Kbps on Cat M1 and 32 Kbps down / 70 Kbps up on NB1, plus EDGE and GPRS fallback.
- Three serial standards
- One software-configurable port supports RS-232, RS-422 or RS-485 through a locking 10-pin Nano-Fit connector with 15 kV RMS protection.
- 2 W maximum draw
- 0.24 W idle and 2 W at full load on a 4.5-36 VDC input, suited to battery or solar-backed sites.
- Compact footprint
- 84 x 50 x 21 mm and about 55 g, with wall-mount holes and an included DIN rail bracket.
- SMS control
- Query status, change APN settings, reboot or start a firmware upgrade by SMS, with sender whitelisting and password protection.
How to choose the right NTC-100 Series part number
There are two modem part numbers. NTC-100-01-01 is the base LTE Cat M1/NB1 serial modem. NTC-100G-01-01 adds GPS for location reporting; otherwise the serial interface, bands and power input are the same. Accessories include the PSU-0004 12 VDC 1.5 A adapter with interchangeable plugs, the NANT-00001-000 3 dBi hinged SMA antenna, and the NANT-00006-000 LTE tube antenna listed for Japan. Because the series is Last Time Buy, confirm quantities for the remaining life of your deployment.
Configure & order
Find your NTC-100 Series part number
Every orderable NTC-100 Series configuration, filtered by the specs that actually differ between them. Pick what you need on the left and the matching part numbers appear here.

NTC-100-01-01
$129.00
Ships on backorder
Complete the deployment
Accessories, renewals & add-ons
Everything sold for the NTC-100 Series, organized by what it does — antennas, power— each with why you'd add it.
Antennas
2 items
4G LTE Antenna
NANT-00001-000
Single 4G LTE antenna accessory with an L-hinged SMA male connector. The NANT-00001 antenna specifications list 698–2700 MHz coverage and 4.71 dBi maximum gain.
$8.40
Ships on backorder

Antenna
NANT-00006-000
LTE tube antenna for Japan with an SMA connector. It supports a 698–2700 MHz frequency range and is listed for NTC-100 Series products.
$9.31
Ships on backorder
Power
1 item
Power Adapter
PSU-0004
AC/DC Power Adapter with interchangeable heads for US/UK/EU/AU/SA/TW/CH/JP regions. It provides 11.4 – 12.6 V DC output with 1.5 A maximum output current.
$11.88
Ships on backorder
Compatibility taken from the Lantronix part-number tables for the NTC-100 Series. Don't see what you need? Request a quote — we can source the full Lantronix catalog.
Where the NTC-100 Series is used
- Cellular backhaul for RS-485 meters and data loggers
- Retrofitting serial controllers in small enclosures
- Low-power remote telemetry on solar or battery supplies
- GPS-tagged serial data from mobile or relocatable assets
NTC-100 Series datasheets & documentation
NTC-100 Series FAQ
Is the Lantronix NTC-100 discontinued?
The NTC-100 Series is in Last Time Buy status and Lantronix has issued a product discontinuation notice. The source does not name a direct replacement.
What is the difference between NTC-100-01-01 and NTC-100G-01-01?
The NTC-100G-01-01 includes GPS. Both are LTE Cat M1/NB1 modems with the same RS-232/RS-422/RS-485 serial port, USB 2.0 device port and 4.5-36 VDC input. Choose the G model if you need location reporting.
Which LTE bands does the NTC-100 support?
LTE-FDD bands 1, 2, 3, 4, 5, 8, 12, 13, 18, 19, 20 and 28, LTE-TDD band 39 (Cat M1 only), and EGPRS on 850, 900, 1800 and 1900 MHz.
What power does the NTC-100 need?
4.5 to 36 VDC through the 10-pin Nano-Fit connector. It draws about 0.24 W idle and 2 W at full load. The PSU-0004 12 VDC adapter is available for mains-powered sites.
What certifications does the NTC-100 have?
Listed approvals are RCM, CE, IC, FCC, GCF and PTCRB. Carrier approvals are Telstra and AT&T, and environmental compliance covers RoHS2, REACH and WEEE. Confirm the carrier approval that matches your SIM before deployment.



