Underground traffic managent system devices We present our custom boards, that meet the requirements for building a network in harsh environments such as mines. LTP5902 BOARD Low Power The size D battery case fits with batteries with a capacity up to 19.000 mAh in combination with low power consumption, to provide a Years of Trouble Free Operation solution. Reliable Data reliability >99.999% in tough environments. Plug n play Just install the device, switch ON and it automatically connects to the network and route data. Customize The board can be easily configured with several I/O, power switch, function leds to fulfill every need. LTP5902 RPi BOARD Power FROM TRUCK Powered from truck battery Moving network Extend your mesh network το moving vehicles. Rual radio Provides flexibility for applications and reduce time between operations. Integration with the Raspberry Pi 4 Gives a number of possible solutions. Many different sensors for driver and truck status can be added.