ST Engineering Telematics Wireless

T-Light LCU-C Nodes


The T-Light Light Control Unit – Cell (LCU-C) and its communication interface with the T-Light management software are key components in the Telematics Wireless Smart Lighting System. The LCU-C has three major functions: (a) control over the streetlamp luminaire, (b) provisioning of Smart City services, such as city-wide WiFi or environmental sensors, and (3) as a communication relay to the Smart Lighting System Control Management Software (CMS).

The LCU-C uses cellular network (LTE) as its principal communication method to the CMS software. Connected to a luminaire’s standard ANSI C136.41 compliant photocell receptacle (a NEMA socket), the LCU-C sends sensor data to the CMS, and executes scheduled and unscheduled luminaire control commands, such as on/off and dimming, received from the CMS.

In addition to its functionality as a light control unit that is identical to other T-Light LCUs, the LCU-C also operates as an internet access point utilizing its WiFi capability. It can monitor and control various WiFi-enabled high bandwidth sensors, such as cameras, for safety applications and many others.


  • LTE CAT 4; Optional LTE CAT 3 and CAT 1; in Roadmap LTE CAT M and LTE NB IOT
  • Built-in MIMO RF antenna
  • IPv6 and IPv4
  • TCP/IP with dynamic IP addressing
  • WIFI 802.11b/g/n access point
  • AT Commands over the air for device WIFI and modem configuration
  • Multiple IP addressing
  • Port forwarding
  • DHCP IP reservation for local WIFI client static IP addressing
  • Real-time reporting and alarms
  • Photocell for backup light control
  • Built in energy meter
  • Over the air firmware upgrades
  • Secured data protection
  • 1-10V and/or DALI driver interfacing
  • Auto commissioning using GPS coordinates
  • 7-pin NEMA for external sensors
  • Built in Multi-band LTE Cellular modem