The low mass X-ray binary system 4U 1812-12 was monitored with the INTEGRAL observatory in the period 2003-2004 and with BeppoSAX on April 20 , 2000 .
We report here on the spectral and temporal analysis of both persistent and burst emission .
The full data set confirms the persistent nature of this burster , and reveals the presence of emission up to 200 keV .
The persistent spectrum is well described by a comptonization ( CompTT ) model plus a soft blackbody component .
The source was observed in a hard spectral state with a 1-200 keV luminosity of 2 \times 10 ^ { 36 } ergs s ^ { -1 } and L/L _ { Edd } \sim 1 \% and no meaningful flux variation has been revealed , as also confirmed by a 2004 RXTE observation .
We have also detected 4 bursts showing double peaked profiles and blackbody spectra with temperatures ranging from 1.9 to 3.1 keV .