The active distance between the tag and R/W head
The common read-write head of bisv processor cannot meet the read-write distance of more than 100 mm.
This requires us to use a special adapter to connect the super long distance read-write head to read.
Here, we use the BIS vm-920 adapter + M series read-write head.
The combination of bis vm-920 adapter + M series read-write head can achieve a maximum distance of 400mm.