Murata Negative Ion Generator, MHM4 Series

nglish Version (Professional Specification Standard)

Brand: Murata (Japan)Model: MHM402-00 (MHM402 Series)Type: AC-powered Negative Ion Generator Module (Generates negative ions via high-voltage discharge)Structure: Separated design with plastic insulated high-voltage power unit and ion emission needlesManufacturer: Murata Manufacturing Co., Ltd.Features: Direct operation at 220VAC, no additional power board required; ultra-low power consumption (0.4W)

II. Main Specifications (Typical Values)

Input Voltage: AC 220/240V (Range: 210–250V)Input Power: 0.4W (Ultra-low power consumption)Ion Type: Negative ions (Negative oxygen ions)Ion Concentration: 4,000,000 pcs/ccOzone Output: 0.4 mg/h (Low ozone emission, safe to use)Operating Temperature: High-voltage unit: -10℃ ~ +50℃; Emission needles: -10℃ ~ +70℃Operating Humidity: 20%RH ~ 80%RHDimensions (High-voltage Unit): Approx. 44 × 28 × 18 mmCable Length: 200 mm for input and output cables (Standard for MHM402-00)Weight: Approx. 35 gCertifications: RoHS, EN60335-1

III. Functions & Working Principle

Principle: Continuous generation of 4,000,000 ions per cc through high-voltage corona discharge.

Functions:

Air Purification: Absorbs dust and PM2.5 particles to make them settle.

Sterilization & Bacteriostasis: Damages cell membranes of bacteria and viruses to reduce their activity.

Deodorization: Breaks down formaldehyde, mildew odor, cigarette smoke and other peculiar smells.

Air Freshening: Creates fresh air similar to forest or post-rain environment and improves indoor air quality.

IV. Application Scope

Designed for household and commercial devices powered directly by 220V AC with low power demand:

Compact & wall-mounted household air purifiers

Air conditioners (Wall-mounted / Floor-standing type, central air conditioner air outlets)

Fresh air systems / Ventilators

Fans / Air coolers / Heaters

Refrigerators, shoe cabinets and wardrobes (For sterilization and deodorization)

Small commercial purification equipment (For meeting rooms, offices and restrooms)

Smart home devices (Purification lamps, humidifiers with air purification function)