Lowrance LMF - 200 Multi - Function Gauge is a compact, can - do performer! Fits 2 - 3/8" diameter spot in your dash! Stop messing around with those "dual-function" gauges and pick one up that can do everything! From battery voltage to GPS speed to engine oil pressure, you can hook this baby up to keep track of just about anything! The trimmed down 2 3/8" diameter hole fits a smaller dash. Convenient high-contrast dot matrix LED backlighting allows for night-time use. All-purpose gauge: Capable of displaying the following NMEA 2000 data: paddlewheel speed, GPS speed, tachometer, battery voltage, alternator voltage, engine temperature, water pressure, engine oil pressure, fuel pressure, boost pressure, transmission oil pressure, atmospheric pressure, temperature, depth, engine loads, engine hours, fuel flow, fuel economy, fuel remaining, fuel used, fuel range, trip fuel used, seasonal fuel used, engine synchronizer, fluid level, GPS position, trim tab position, engine trim position, and engine alarms and warnings; NMEA 2000 compatible for LowranceNET networking; Packaged without a Fuel Flow E.P. sensor; Compatible with an array of electronic probes, including fluid level, temp, speed, and more; Capable of connecting to a remote speaker for alarms; Keep tabs on everything that"s going on with your boat! Pick this Gauge up today! Lowrance LMF-200 Multi-Function Gauge