Description Teracom TCG140-4 is a versatile 4G LTE universal IO module designed for reliable remote monitoring, control, and data acquisition in M2M and IoT applications. It supports LTE Cat.1 connectivity with upload speeds up to 5 Mbit/s, and is backward compatible with 3G and 2G networks, operating across LTE-FDD, DC-HSDPA, HSPA , HSDPA, HSUPA, WCDMA, EDGE, and GPRS. This ensures seamless operation in virtually any location with cellular coverage. Designed for autonomous operation, the TCG140-4 communicates efficiently with remote servers and IoT platforms using HTTP/HTTPS POST (XML/JSON) and MQTT messaging. It includes multiple analog inputs (0–10 V and 0–20 mA), digital dry contact inputs, and a MODBUS RTU interface, making it compatible with a wide range of industrial sensors and devices, including all Teracom peripherals. The TCG140-4 is the direct successor to the TCG140, maintaining identical I/O and digital interfaces while upgrading to 4G LTE connectivity and expanded frequency band support. This ensures a smooth migration from older 2G models, particularly in regions where 2G networks are being phased out. Initial configuration can be performed through a standard web browser, while SMS and HTTP API commands allow remote setup and control. Over-the-air firmware updates simplify maintenance and field deployment. The device is built in a robust metal enclosure and comes with DIN-rail mounting accessories for industrial installations. Features Multi-band cellular connectivity: 4G LTE, 3G, 2G MQTT support with both publish and subscribe modes Configuration via USB, SMS, or HTTP(S) API 2 digital “dry contact” inputs Supports up to 8 Teracom 1-Wire sensors Supports up to 8 MODBUS RTU sensors/devices 4 relay outputs with NO and NC contacts Up to 4 analog inputs (0–10 VDC) Up to 2 current loop inputs (0–20 mA) HTTP(S) API commands for client-server integration Periodic HTTP/HTTPS POST with current status in XML or JSON format Built-in data logger for up to 70,000 records Periodic HTTP/HTTPS POST of logger data in CSV format SMS alarm notifications to up to 5 numbers Email alarm notifications to up to 5 recipients, SMTP with TLS support DIN-rail mountable for easy industrial installation Firmware update via USB or over the Internet 4G LTE universal IO module TCG140-4 – User manual (v1.19) Hardware version identification Hardware version 1 – the latest firmware (FW) and user manual (UM) TCG140-4E firmware (v1.026) TCG140-4G firmware (v1.026) TCG140-4 firmware change log (v1.026) USB serial port driver TCG140 3D model TConfig
