The CPT-110 is a Plastic Thru-Hull Transducer from Raymarine for the CP100 Sonar Module. The CPT-110 contains two elements, one for the conical beam CHIRP sonar (center frequency 200kHz) the other for the DownVision CHIRP sonar (center frequency 350kHZ). The Raymarine CPT-110 also contains a temperture sensor and includes a 10M Cable.