FHOM-103 handheld Optical Multimeter is a 3-in-1 optical multimeter which integrates the functions of an intelligent optical power meter module,laser light source and fault locator in one device.It can perform closed-loop tests by using both modules and can also work individually ,what's more,it can be used to measure the optical fiber link light power loss and provide the reference for laser source and variable attenuator.FHOM-103 provides a choice of greater convenience and more advantages for users.