product details Product name: [odorless electric mosquito coil] Product specifications: 45ml/bottle Duration: about 300 hours/bottle Shelf life: 24 months Features: The effect is stable for 300 hours. The constant temperature PTC heating element is used, and the high-quality core rod of the electric mosquito repellent liquid is used to ensure the uniform effect of the medicine. Easy to use, no need for daily replacement: There is no need to add or replace every day during use, just insert the liquid bottle directly and it can last for 300 hours. Family members can use it more at ease: the heater uses flame-retardant materials to ensure long-term storage, reasonable structure, and no need to worry about liquid leakage. Instructions: 1. Unscrew the cap of the electric mosquito coil liquid. 2. Slowly screw the liquid bottle to the right into the heater. 3. Turn on the power and turn on the switch. When the red light is on, it means the heater starts to work. After use, just press the switch to stop the heater, no need to pull out the plug. 4. After the electric mosquito repellent liquid is used up, please replace it with a new one. Precautions: 1. Please follow the instructions. 2. Suitable for a space of about 15 square meters, including bedroom, living room, kitchen, etc. 3. Don't let children play with it, and don't store it with food. 4. If your eyes or skin come into contact with the heated mosquito repellent liquid, please rinse with clean water. If you accidentally swallow it, please consult a doctor immediately. 5. Keep out of direct sunlight. 6. The power cord cannot be replaced. If the cord is damaged, the appliance should be discarded. 7. Please start using it one hour before going to bed. 8. Do not place this heater in an electric fan or other vents.