Looking for a replacement Transom Mount transducer for your Raymarine a-Series or CP-100 with Downvision? Raymarine's A80270 CPT-100 Depth/ Temp CHIRP Transom Mount Transducer is the exact transducer that came with your a68/a78/a98/a128 unit. Provides DownVision Imaging and depth performance up to 600ft. Included 10M cable. Compatible with a68/a78/a98/a128 and CP-100.