Intelligent analysis of the counts from different scintillator s and their fusion based on the statistical modeling of underlying phenomena makes PRPM2120-SPECT decision accurate and decrease the false alarm rate. PRPM2120-SPECT utilizes large plastic scintillators with efficient detection parameters. The plastic scintillators have highly efficient detection parameters and the natural degradation of their light yield is impressively slow. PRPM2120-SPECT is equipped with internal battery which makes it suitable for portable applications. PRPM2120-SPECT is designed with easily readable display that can help to monitor its status in the LCD box. In the case of any abnormality detection, the device indicator color would change to the appropriate color. To detect the presence of a person in the gate, PRPM21 20 - SPECT can be optionally equipped with optical sensors. These sensors would help the device emphasize on the time when the person is inside the gate and the detection unit presents the most relevant information. One important feature in PRPM2120-SPECT is the design considerations for fast assembling, so two people can assemble the device in at most 10 and 60 minutes for gamma version and gamma &beta version respectively.