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Auto-Cleaning NPBI® Soft Ionization System

The DM-2™ is the auto-cleaning needlepoint bipolar air ionization system designed for indoor duct mounting, delivering ions where you need them.

Specifications & Resources


Ionizer Total Ion Output: 200M ions/cc

Airflow Capacity: 2,400 CFM or up to 6 tons


Unit Dimensions: 3.75"Dia. × 1.75"L (in-duct) / 5.75" Dia. × 3.75"L (overall)

Unit Weight: 1.8 lbs

Electrical Specifications

Input Voltage (Standard): 24 VAC/VDC, 110–240 VAC

Input Voltage (Optional): 277 VAC – with PS-2 power supply

Power Consumption: 11 watts (standard operation), 14 watts (cleaning cycle)

Frequency: 50/60HZ

Electric Listings: UL, cUL

Alarm Contact Rating: 250 VAC / 1A, N.O. “dry” contact


Compliance & Certifications

Compliance & Certifications: UL 2998, UL 867, CARB

Environmental Specifications

Temperature Range: –20° F to 140° F

Humidity Range: 0–100% RH