The detection of explosive substances is crucial for national security and countering the anti-terrorist activities. This research focuses on the use of a novel molybdenum disulfide (MoS2) coating material on surface acoustic wave (SAW) sensors to detect nitro aromatic explosives, specifically 2,4-dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT). When these analytes are adsorbed onto the MoS2 layer, the propagation of surface acoustic waves is altered, leading to a measurable shift in the resonant frequency of the SAW device. Our experimental setup demonstrates the efficacy of MoS2-coated on a single-port SAW resonator for the detection of explosive vapors. Furthermore, varying the thickness of the MoS2 coating resulted in different shifts in oscillating frequency and sensitivity, ensuring consistent performance across diverse coating layers. By coating of MoS2 on the SAW device as the receptor material, the SAW sensor systems achieve enhanced sensitivity of 282 Hz per ppm and specificity, making them highly effective in identifying explosive substances.