20mm 1.7mhz piezoelectric humidifier, energy conversion plate

From the shop's description

20mm 1.7 MHz Ultrasonic Atomizer Air Humidifier Piezoelectric Transduce Specification: Type: Piezoelectric Transducer Dimensions: With rubber grommet seal attached – 25 mm (Diameter) x 5 mm (Thick) Lead Length: Approximately 110mm Rubber Grommet Seal Color: White Resonant Frequency: 1.70 ±0.05 MHz (please make sure this is the correct frequency for your equipment) Resonant Impedance: ≤2.0 ohms Static Capacitance: 1700 pF Electrical-mechanical Coupling Coefficient: ≥0.45 Average Life: 5000 Hours Water Rate:300M/H Features: -The front surface of the transducer is coated with a glass composite glaze that is superior in resisting various common corrosive impurities; the coating is also anti-oxidation with a long lasting life. -Suitable For Family, air-conditioned rooms, beauty salons, hotels, hospitals, offices and other living spaces. Package Included: 1×Ultrasonic Atomizer Air Humidifier Operating voltage DC 3.7 ~ 12 Resonant Frequency (MHz) 1.77 Resonant Impedance <2 Coupling factor >52% Electrostatic capacity 3000 pF Spray quantity > 110 mL/h Shipment Weight 0.01 kg Shipment Dimensions 5 × 2 × 1 cm