• Visual indication for detection zones A and B
  • Visual Display of reader transmission range


The TVD4 Tag is a normal TV4 tag modified to include a Red, Green and Amber LED. When the TVD4 tag first sees an interrogation field produced by the reader, the Red LED will flicker for detection zone A and the Green LED will flicker for detection zone B. When a tag is within range of the reader, the Amber LED will flicker to indicate the tag is being read.

TVD4 Cyphertags® have a shelf life of 7 years or greater stored at 20°C. Operational life depends upon usage.


Specification Details
Dimensions 56 x 43 x 12mm
Temperature range -20°C to +60°C non condensing
Housing Polycarbonate
Weight 32g
Colour Grey
LEDs Red - Detection zone A transmission field
Green - Detection zone B transmission field
Amber - Tag being read




The product is suitable for numerous applications, they include but are not limited to:

  • Diagnostic tool
  • System optimisation

Ordering Information

Ordered as TVD4.