ST40 Features:
Seven segment digits (1.1" digital and 0.7" analog)
Surface and bracket mount options
SeaTalk integration for sharing and repeating navigation data
Optional clip-on bezels
Three levels of backlighting
Self-sealing speed transducer for easy cleaning and maintenance
Backlit push button controls
Waterproof to CFR-46 standard
Operating voltage 7.5V to 16.5V
Low operating current (40mA)
Compatible as repeaters with ST30, ST50, ST50 Plus, ST60, ST80, Raydata and the L760 Plus, L755 Plus and L1250 Fishfinders