4G LTE wireless I/O module
TCG120-4 is a 4G LTE wireless I/O module with MQTT support.
Description
TCG120-4 is a 4G LTE wireless I/O module. In addition to 4G, the device also supports 3G and GSM-GPRS, which makes it a reliable choice for last-mile communication in areas with any mobile network coverage. While the network selection is automatic by default, it can also be fixed manually during the setup process.
When it comes to I/O, the device includes 2 digital inputs, 2 analog inputs, and 2 relays with both normally open and normally closed contacts. Moreover, it features a 1-Wire interface that supports up to 4 Teracom sensors, allowing for extended monitoring capabilities.
For initial setup, users can access a graphical interface via any standard web browser. Later, in the field, the device can be conveniently configured remotely using either SMS or HTTP API commands.
The device also supports offline operation. In this mode, the relays can be triggered by alarm conditions from any monitored parameter—whether digital inputs, analog inputs, or connected sensors. This allows the device to directly control processes without external commands.
The wireless I/O module can also integrate into supervisory control and data acquisition (SCADA) systems. To enable this, it supports machine-to-machine (M2M) communication protocols such as HTTP API and MQTT.
When using the HTTP API, the module sends its full status in XML or JSON. With MQTT, only selected parameters are sent. MQTT works efficiently even on networks with very limited bandwidth. You can learn more about MQTT in our blog.
4G LTE wireless I/O features
- 4G LTE, 3G, and 2G connectivity;
- Setup via WEB interface through the USB;
- 2 digital (”dry contact”) inputs;
- 2 analog input with 0 to 60VDC range;
- 2 relay output with normally open and normally closed contacts;
- 1-Wire support for up to 4 Teracom sensors;
- SMS alarm alerts (up to 5 numbers);
- TLS over SMTP support;
- Email alarm alerts (up to 5 email recipients);
- GSM Geolocation*;
- MQTT support;
- Periodical HTTP Post with XML/JSON status file;
- Remote setup with HTTP API or SMS commands;
- Firmware update over the air.
4G LTE wireless I/O module applications
- Remote control of street lighting;
- Environmental monitoring of agriculture sites;
- Remote control of railway facilities;
- GSM geolocation of refrigerators;
- Remote control of water pumps;
- Remote monitoring and control of distant facilities.
Supported sensors
4G LTE wireless I/O gallery
