Compatible with: 398C SI, 598ci HD SI, 698ci HD SI, 798ci SI , 798ci HD SI, 899CI HD SI, HELIX 5 SI GPS, HELIX 5 CHIRP SI GPS G2, HELIX 7 SI GPS, HELIX 7 CHIRP SI GPS G2, HELIX 7 CHIRP SI GPS G2N and HELIX 9 SI GPS

Compact Dual/Side Imaging. 20/60/180 degree, 200/83/455 kHz with built-in temperature.

The above in qoutes is from the HB site.

My HB is a gen 2 si/di gps model
Transducer in box is
XNT 9 SI 180 T
The transducer is a compact SI transducer.
Is the model Helix you have a G2 or a standard Helix as listed in the 1st qoute above as one of the compatable units?
Is this a used unit?