1. Students should operate and use this model under the guidance of a teacher.

2. It is strictly prohibited to inject anesthetic drugs, water, or any other liquids into the model, as this will corrode the sensors inside the model.

3. Please use standard anesthesia needles for the operation.

4. Please use anesthesia needles of appropriate length according to the textbook. If a short needle is forcibly inserted into a deeper position, it may damage the silicone membrane. Additionally, to extend the lifespan of the silicone membrane, please avoid using needles with an outer diameter exceeding 0.4mm.

5. Please avoid storing this model in environments with direct sunlight or significant temperature fluctuations.

6. Do not pull the wires on the model excessively to prevent them from breaking.

7. When replacing the battery, please use size 5 alkaline batteries that do not leak.

8. Please do not use this model for purposes other than those described in the instruction manual.

9. If you need to clean this model, use a neutral and gentle detergent for wiping. The use of acidic, alkaline, oily, or chlorine-containing detergents is strictly prohibited.

10. If you insert the anesthesia needle directly into the inner side of the sensor (with the needle tip touching both the copper sensor tip and the side wall) and there is no sound prompt, the possible reasons are as follows:

null1. The battery is depleted. Please replace the battery.

null2. The battery is not properly installed or is inserted in reverse. Please reinstall the battery.

null3. Poor contact due to dirt or rust on the surface of the sensor or metal needle. Gently remove the rust with fine sandpaper or a small file. (It is recommended to attach a small brush of appropriate diameter to the sensor and use a dental grinder to slightly polish the inside of the sensor, while using an air gun to blow away debris for optimal results.)

null4. The wire is broken. You can reconnect it and wrap it with insulating tape, or return it to our company for repair.

11. If the buzzer sounds without injection after being plugged in, the likely cause is metal debris falling into the sensor and causing a short circuit. The solution is to remove the silicone membrane to expose the sensor electrodes, and use an air gun to blow away the debris. (It is recommended to attach a small brush of appropriate diameter to the sensor and use a dental grinder to slightly polish the inside of the sensor, while using an air gun to blow away debris for optimal results.) The three electrodes on the upper palate are relatively prone to this situation.

12. The silicone membrane is a consumable item. When it is completely worn out, you can purchase a replacement from our company.