Coin Identification Under Violet Light: Counterfeit money does not fluoresce. 1. Genuine banknotes absorb light without reflection; counterfeit banknotes have a strong blue-white reflection. 2. Counterfeit currencies have a clear watermark on the head or design, while genuine currency does not. 3. Keep the detector surface clean, especially the detection slot. 4. After checking the banknotes, turn off the unit. If not in use for an extended period, unplug it to preserve the machine's lifespan. 5. Strictly forbidden to wash the detector casing with water to avoid malfunctions. 6. If the detector is not working correctly, turn it off and restart it. If it still doesn't work, contact the manufacturer promptly. Do not make any adjustments to the machine, as this may affect the detector's performance. (Batteries are not included). 7. During transport and use, avoid strong vibration of the machine to prevent affecting the detector's performance. 8. The detector is a high-precision instrument, and users are not permitted to disassemble it themselves.