Two Spray Modes: Press the switch for the first time for continuous spray mode: the LED light is always on and the spray keeps spraying. It will automatically shut down after 4 hours of spraying for protection. Press the switch for the second time to enter the indirect spray mode: LED flashes, sprays for 10 seconds, stops spraying for 5 seconds, and so on, it will automatically shut down after 12 hours of spraying for protection. Press the switch a third time to turn off the machine. Installation Method: The white piezoelectric ceramic ring surface is the front spray surface, which is installed upward, All steel sheet surface is the suction surface on the back, installed downwards. Place the Atomizer on the Surface of the Water and Cannot Be Placed in Water. The red wire is positive and the black wire is negative. Spray Principle: Piezoelectric ceramic drives the metal plate to oscillate at high frequency, and ultrasonic liquid atomizes. Micrometre-sized water molecules atomize and disperse water into the air through micropores.Anti-rust Coating: Surface of the sheet adopts an oxidation-resistant silver layer to protect the coating process, long life.Widely Use: Can be used for ultra-sonic mist devices, USB humidifier, perfume spray, aromatherapy spray and other mist devices. It has the characteristics of small size and large atomization volume.The left and right solder joints of the switch can be welded together to facilitate power supply without the need to control the switch. The waterproof glue on the wire welding points and the silver oxide layer on the surface of the atomizer provide additional protection, making this ultrasonic atomizer durable.The high-frequency oscillation system cooperates with the carefully crafted circuit board bracket to ensure the amount of atomization with Micrometre aperture and form a fine mist. SPECIFIC