The hybrid radiometer RHC30 patented in 1995, has in its 2.0 version an optimization of the measure head: it is equipped with self sealing hydraulic fittings for water cooling over an average power of 100W and a most important sensitive area photodiode to detect pulses of lower peak power (500W). Like the 1.2 version, it is designed to operate on fixed frequency pulsed lasers starting from a few 0.1Hz. Although this version is obsolete, given the depletion of stocks of Intel microcontrollers that fit the electronics, Laser Métrologie still ensures its maintenance for customers who use it.