The LEO2 is the standard digital pressure transducer and sensor gauge. They feature a 0.1 percent FS accuracy, max/min, a choice of units and IP65. An Intrinsically Safe version is also available.
The LEO1 has all the features of the LEO2 complete with 'peak mode', which increases the sampling rate from 2Hz to 5000Hz so that the max value can catch pressure peaks caused by hydraulic hammering or similar.
The LEO3 has all the features of the LEO2 with the added bonus of a two-wire analogue and RS485 digital output.
The LEX1 is a precise digital manometer, capable of up to 0.01 percent FS accuracy.