Made for Single Rooms

103 Series Airflow Indicators Available Nationwide

Our Indicators Are UL-Approved and Designed With Your Needs in Mind

103 Series Airflow Indicators

Lamiflow L-103F series airflow indicators provide the ability to connect building automation and nursing alarms with constant airflow monitoring.

Learn About the 103 Series

LN-103F - Negative Electronic Airflow Indicator

LP-103F - Positive Electronic Airflow Indicator

Lamiflow 103 Series electronic airflow indicators provide a safe, accurate, reliable and simple way to constantly monitor airflow for content-sensitive environments. Our 103 series is a single-room airflow indicator. These electronic units are designed to provide a trigger to building automation or nursing alarm stations when room airflow is lost. The L-103F comes equipped with a set of dry contacts.

LP 103 F Positive Electronic Airflow Indicator

Voltage Needs

Local low-voltage power is needed with the L-103F. It can be used with various low voltage, though 12V or 24V is most commonly used. If you have another voltage you would like to use, please call us to discuss what you have.


They are UL-approved with a two-hour firewall safety rating. Every unit comes with firestop protection preinstalled. Our graduated meter design provides an easy-to-see and easy-to-understand measurement for all staff members and your next inspection.

Any Airflow

They measure airflow from just below 5 fpm to above 400 fpm. Our unique flapper design is hyper-sensitive and will function in a wide range of airflow conditions.

Typical Size

Out of the box, the L-103F will fit a 4.5" to 7" width wall. Custom lengths can be ordered for any wall dimension. Lamiflow indicators are installed in over 1800 health care facilities so the technology is well proven and accepted. Everything Lamiflow Tech produces is 100 percent designed and made in the USA!

Backed by Our Warranty

With a nearly zero percent failure rate, we stand behind our products with a lifetime warranty against any manufacturer defects. The 103 series is engineered to run 24/7 365 days a year to provide real-time airflow measurement. Call us today to get a quote.

*Return Policy: Units may be returned within 30 days of purchase. A restocking fee of 18% will be applied for any/ all returns within the allowable 30 days.

Do You Need to Know the Airflow?