There are many transducer options for your instrument, depending on your vessel's hull and instrument display, etc. All transducers are SeaTalk and STNG compatible allowing for easier installation.
DEPTH ONLY
Transom Mount: P66 or P79.
Plastic Thru-Hull: P7 Shorty, D800/P17, P19 or Tacktick T912.
Bronze Thru-Hull: B45 or B17.
DEPTH, SPEED & TEMPERATURE
Transom Mount: P66 or P65.
Plastic Thru-Hull:
DST800 - 0 degree analogue (13.7m cable for crimp connections)
DST800 - 0 degree analogue (2.8m cable for wireless hull transmitter connections).
Bronze Thru-Hull: B744V or B744VL.
SPEED & TEMPERATURE
Transom Mount: ST69.
Plastic Thru-Hull: ST800/P120 (13.7m or 20m cable) or ST300/P370.
Bronze Thru-Hull: ST800/B120.
ST70 SMART TRANSDUCERS
Depth & Temperature: DT800-12 Bronze or DT800-12 Plastic.
Depth, Speed & Temperature: DST800 Bronze or DST800-0 Plastic.
OTHER TRANSDUCERS
Wind Rotavecta (speed/angle).
Wind Vane (speed/angle).
Fluxgate Compass.
Rudder Reference.