20mm 2.4MHz Ultrasonic Mist Maker — Piezoelectric Atomizing Transducer for Humidifiers

20mm 2.4MHz Ultrasonic Mist Maker — Piezoelectric Atomizing Transducer

This 20mm piezoelectric ultrasonic transducer operates at 2.4MHz to atomize water into a fine cool mist without heat. Driven by a matching ultrasonic driver circuit (sold separately), it is the core component of DIY humidifiers, aroma diffusers, foggers, and mist-based cooling systems. The 20mm disc size is the most common standard for consumer humidifier replacement and DIY mist maker projects.

Key Specifications

Parameter	Value
Diameter	20mm
Operating Frequency	2.4MHz (ultrasonic)
Type	Piezoelectric ceramic transducer
Mist Output	~300–500mL/h (with matching driver)
Operating Voltage	24V AC (via driver circuit)
Mist Temperature	Cool mist (no heating)

How It Works

• The piezoelectric disc vibrates at 2.4MHz when driven by an ultrasonic driver circuit
• Vibrations create cavitation at the water surface, atomizing water into 1–5μm droplets
• Droplets form a visible cool mist without heating the water
• Requires a 2.4MHz ultrasonic driver module (not included) for operation

Why Choose This Transducer?

• ✅ 20mm standard size — direct replacement for most consumer humidifiers
• ✅ Cool mist — no heating element, safe for essential oils and aromatherapy
• ✅ High mist output — ~300–500mL/h with matching driver
• ✅ DIY friendly — easy to integrate into custom humidifier and fogger builds

Typical Applications

• DIY ultrasonic humidifier build
• Aroma diffuser and essential oil fogger
• Stage fog and mist effect machine
• Greenhouse and terrarium humidification
• Arduino-controlled mist system

Package Contents

• 1 × 20mm 2.4MHz Ultrasonic Piezoelectric Mist Maker Transducer

Ultrasonic driver circuit not included.

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

We are committed to quality, reliability, and customer satisfaction. Every product is carefully selected and tested to meet the highest standards.