For longer read ranges of ISO tags, this high power handheld reader can handle the job.  This dual antenna reader can read a 2.1mm x 12mm ISO tag up to 8”.  FDX-A, FDX-B, HDX, Trovan, Avid, Datamars, ISO Compatable
ISO 11784/11785
Frequency: 134.2 kHz
7.2V Li Ion rechargeable battery
IP 54 Protection class
Stores up to 2000 records
Reader options: USB or Bluetooth connectivity (different readers)