Metal semiconductor halide perovskites have been subject of great interest in recent years due to their high photovoltaic response, and so has been implemented in the fabrication of solar cell devices, optoelectronics, lasers, LEDs and photodetectors. In this work, the manufacture of completely inorganic perovskite thin films (CsPbBr3) and the construction of a set of low-cost and responsive electronic photodetectors based in this novel material reaching performances comparable to those used commercially are reported. Perovskite thin films were synthesized by the high vacuum thermal evaporation technique, sequentially stacking layers of the inorganic CsBr and PbBr2 precursors. X-ray diffraction characterization showed a single-phase composition of the thin films consisting in CsPbBr3 crystals. Scanning electron microscopy images revealed thin films having uniformity and good substrate coverage, with average grain size value of 1.25 μm which avoids the rapid degradation process occurring in massive grain boundaries proper of small grain sizes and prevents the recombination processes that are detrimental of thin film electric transport. Reflectance and transmittance spectra analyses were performed, obtaining an optical band gap Eg=2.36 eV and an absorption coefficient α∼104 cm-1, which are comparable with classic semiconductors. An electronic prototype with a layered planar Au/CsPbBr3/Au architecture was constructed to quantify the electrical response produced when illuminated with laser radiation of [[EQUATION]]in the power regime between [[EQUATION]] and [[EQUATION]]. Respective [[EQUATION]] curves exhibit an increasing in the generated photocurrent with the increment in the incident photon power. The proposed Au/CsPbBr3/Ag prototype device was constructed in order to make a Schottky junction to create a self-powered photodetector. The corresponding I-V response showed a significant electric current close to [[EQUATION]] at [[EQUATION]] for a resulting power of [[EQUATION]], while for the device with both Au electrodes a current not even close to [[EQUATION]] is reached for same power conditions. It was stablished that the Au/Ag electrodes device used as a photodetector has the capability of translating the incident power into an electrical signal measured as power in [[EQUATION]]. When a power incises on the perovskite, a voltage response is produced, and that voltage is translated by a 16-bit analog-to-digital converter. The results suggest near-term technological applicability for the devices proposed in this manuscript.