4G LTE Wireless I/O Module with MQTT - TCG120-4G

Reference: TCG120-4G

Condition: New product

4G LTE Wireless I/O Module with MQTT Support

The TCG120-4 is an industrial-grade wireless I/O module with 4G LTE connectivity and full MQTT support. It is designed for remote monitoring, automation and SCADA integration, ensuring reliable last-mile communication even in areas with limited or unstable mobile coverage thanks to its 4G/3G/2G multiband operation.

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Description

The device offers automatic or manual network selection and a user-friendly Web interface accessible via USB in any standard browser. Once deployed, the TCG120-4 can be configured remotely using SMS commands or the HTTP API. With 2 digital inputs, 2 analog inputs (0–60 VDC) and 2 relay outputs (NO/NC), it allows direct control of processes and field equipment. The 1-Wire interface supports up to four Teracom sensors, significantly extending the monitoring capabilities.

For IoT and SCADA integration, the module communicates via HTTP API using XML/JSON status files or efficiently via MQTT, which is ideal for low-bandwidth cellular networks. Offline logic enables the relays to be triggered by alarm conditions from any monitored parameter, allowing autonomous operation without constant server communication. The unit also supports GSM geolocation* and firmware updates via USB or over-the-air.

Main Advantages

4G/3G/2G multiband connectivity for maximum service coverage.
Flexible setup via USB Web interface, SMS and HTTP API.
Comprehensive I/O with digital/analog inputs and 1-Wire sensor bus.
Two NO/NC relay outputs for direct load control up to 3 A.
MQTT 3.1.1 support for modern IoT platforms.
SMS and email alerts (up to 5 recipients each, TLS over SMTP).
Periodic HTTP/HTTPS POST with XML/JSON status reports.
GSM-based geolocation* of remote assets.
Firmware upgrades via USB or mobile network (OTA).

Applications

Remote control of street lighting.
Environmental and agricultural site monitoring.
Remote control of railway facilities and infrastructure.
GSM geolocation of refrigerators and mobile equipment.
Remote control of water pumps and pressure systems.
Monitoring and control of distant facilities without Ethernet.
SCADA integration and data acquisition in remote plants.
Smart agriculture in remote locations.

Supported Sensors

TSH202 – 1-Wire humidity and temperature sensor
TST100 – 1-Wire temperature sensor
TSC200 – 1-Wire galvanic isolated AC/DC current sensor
TST103 – 1-Wire temperature sensor
TSH206 – 1-Wire humidity and temperature sensor
TSV200 – 1-Wire galvanic isolated voltage sensor
TSV100 – AC voltage detector
TSA200 – 4/20 mA current loop transmitter with 1-Wire interface

Technical Specifications

Category	Details
Physical characteristics	Dimensions: 109 × 65 × 32 mm Weight: 152 g
Environmental limits	Operating temperature: -20 to 55°C Operating temperature for USB setup: 0 to 40°C Storage temperature: -25 to 60°C Ambient relative humidity: 5 to 85% (non-condensing)
Standards and certifications	Safety: EN 62368-1:2014 + amendments (AC1-3:2015, A11:2017, AC:2017-03:2017) RF exposure: EN 62311:2008 EMC: EN 55032:2015 (+ AC:2016-07, A11:2020), EN 55024:2010 (+ A1:2015) Harmonics: EN 61000-3-2:2014 Voltage fluctuations: EN 61000-3-3:2013 (+ A1:2019) RFU/Telecom: EN 301 489-19 V2.1.1, EN 301511 V12.5.1, EN 301 908-1 V11.1.1, EN 301 908-13 V11.1.2, EN 301 908-2 V11.1.2, EN 303 413 V1.1.1 Environmental compliance: RoHS
Warranty	Warranty period: 3 years
Power supply	Operating voltage range (incl. -15/+20% per IEC 62368-1): 10 to 28 VDC Current consumption: 0.24 A @ 12 VDC
Cellular interface	SIM card size: Standard Antenna connector: SMA-F Standards: LTE-FDD, EDGE and GPRS TCG120-4E (h2.xx) bands: 4G LTE: B1/B3/B5/B7/B8/B20 2G: B3/B8 TCG120-4G (h2.xx) bands: 4G LTE: B1/ B2/ B3/ B4/ B5/ B7/ B8/ B12/ B13/ B18/ B19/ B20/ B25/ B26/ B28/ B66/ B34/ B38/ B39/ B40/ B41 3G: B1/B2/B4/B5/B6/B8/B19 2G: B2/B3/B5/B8
Analog inputs	Isolation: Non-isolated Type: Single-ended Resolution: 10 bits Input range: 0 to 60 VDC Accuracy: ±1% Sampling rate: 500 ms per channel (averaged value of 250 samples) Input impedance: 1 mega-ohm (min.)
Digital inputs	Isolation: Non-isolated Type: Dry contact and logic level Minimum high-level input voltage: +2.5 VDC Maximum low-level input voltage: +0.8 VDC Maximum input voltage: +5.5 VDC Sampling rate: 10 ms Digital filtering period: 30 ms
Relay outputs	Type: Form C (N.O. and N.C. contacts) Contact current rating: 3 A @ 24 VDC, 30 VAC (resistive load) Initial insulation resistance: 100 mega-ohms (min.) @ 500 VDC Mechanical endurance: 10,000,000 operations Electrical endurance: 100,000 operations @ 3 A resistive load Contact resistance: 50 milli-ohms max. (initial value) Minimum pulse output: 0.1 Hz at rated load CAUTION: The device does not include internal overcurrent protection on the relay contact lines. External fuses or short-circuit current limiting circuit breakers rated 3 A must be used for overcurrent protection of the connected lines.
1-Wire interface	Output voltage: 5.0 ± 0.3 VDC Maximum output current: 200 mA
Internal FLASH memory	Endurance: 100,000 cycles (each relay status change or settings save counts as one memory cycle)