As more and more countries are removing support for GSM and 2G networks we come out with the TachoSafe RDU 4G to extend the operating area of the RDU GPRS units by updating the communication interface with the latest 4G modules. The TachoSAFE RDU 4G is completely backward compatible with the older GPRS units, all you have to do is insert a SIM card with 4G data plan and you are good to go.
The TachoSAFE RDU 4G also features a secondary antenna for better signal reception in low coverage areas.