Features of UT692 Series Optical Power Meters Certifications: CE, UKCA ● Low battery indication ● Auto power off ● IP65/2m drop proof ● Flashlight UT692 Series Optical Power Meters The UT692 series handheld optical power meters are used to measure absolute optical power or relative loss of optical power through length of fiber optic wires. UT692 series are designed to be durable, the meters can withstand 2m drop and have a dust/water resistance rating of IP65.