high voltage mobile phone 5g jammer which covers 100 metres

I work for WMISG which is part of HMPPS we are looking at purchasing some new technology that will help us within the prison environment , i have been looking briefly online at the high voltage mobile phone 5g jammer which covers 100 metres. Is this currently the best one on the market ? if so could I please have a written quote for this product and a delivery date and any other information that may be useful , so that we can put our business case together and look at the purchase going forward