Communication devices


3G or 4G GPRS modem, router and RTU module with 1 or 4 Ethernet ports. Also used as standalone NTP server.

Telem-4XFO - Fiber-Optic Star Coupler

Telem-4xFO is used for building up point-to-multipoint optical communication solution.

Telem-FO11 - Fiber-Optic Asynchronous Modem

Plastic (650nm) or glass (820nm) fiber multimode transmitters/receivers


Interfaces our data concentrators and RTU IO modules with GARMIN GPS products


Data concentrator for data collection from substation level peripheral devices and for communication protocol adaptation to control centre.


AS Martem Laki 25, 12915 Tallinn, Estonia
Phone: (+372) 639 7979 E-mail: martem [at] martem dot eu