【Water level sensor】 : If the water level is too low, the ultrasonic mist maker may automatically stop working. 【Filter unpleasant odors】The fog machine can add a large amount of fog to your pond or water tank to filter bad smells with ultrasonic technology. 【Interchangeable spray tablets】 At the same time, this ultrasonic maker can replace spray tablets, and we also provide you with two spray tablets. 【Create a better atmosphere】You can place it in your pond, rockery, aquarium, vase, tank, etc. It will create a magical atmosphere. Especially perfect for Halloween and other holidays. 【More haze】 : our pond atomizer can provide more mist than other mist machines. Aerosol quantity ≥ 400 ml/h.