Industry Leading Sensors
NIST-traceable sensors and BACnet-certified controllers trusted by engineers worldwide for healthcare, data centers, and critical facilities.
Browse by sensor type to find the perfect solution for your building automation project
High-accuracy temperature measurement
Precise relative humidity monitoring
Differential & static pressure
CO₂, VOC, and particulate monitoring
WAM™ cloud-connected monitoring
Mounting hardware & enclosures
Calibration & verification tools
Modular I/O and control
BAPI has been changing the way you think about sensors since 1993. We believe sensors are not just simple commodities. They are integral to a building automation controls system and critical to the mission of saving energy. Our commitment to innovation and quality has helped transform BAPI into a leading global manufacturer of sensor solutions with a tremendous focus on quality, reliability and value.
Our products are designed and manufactured to last. We back up that claim by offering a 5-year warranty across all of our products.
A lifetime limited warranty is also available on many of our single point, room and duct room temperature sensors.*
Most sensor manufacturers will replace their defective products, but only BAPI has the confidence to go beyond the industry standard.
'BAPI-Backed' means we stand behind everything we sell, so be confident in the quality of our products that if one fails within the warranty period, we will not only repair or replace it, but we'll provide a product expert to offset your incurred cost.*
At BAPI, we strive to be leaders in our industry by providing innovative, high quality products and services designed with you in mind.
Products displaying the "Another Original" stamp are unique to BAPI and the inspiration for these designs come from our valuable customers, talented employees and respected vendors. Those three ingredients combined create industry-leading, original solutions created to solve common HVACR problems.
From our headquarters in Wisconsin to facilities across three continents, BAPI serves customers worldwide with local expertise and global reach.
Corporate headquarters and primary manufacturing facility
European production facility, office, and customer service center
New manufacturing facility and office serving Asian markets
European sales and customer support hub
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Contact UsLatest updates, product announcements, and industry insights
At BAPI, technology and innovation work hand in hand to keep us at the forefront of HVAC sensor design and manufacturing. As we celebrate Manufacturing Month, we’re highlighting some of the exciting advancements on our production floor that help us deliver high-quality products to customers faster and more efficiently than ever before. One of those […]
Solving HVAC Integration Challenges with BAPI’s Wireless Solution In today’s fast-paced building automation landscape, facility managers, integrators, and engineers face a common challenge: how to expand or retrofit HVAC systems without disrupting operations or incurring high installation costs. Whether you’re adding a new wing to a hospital, upgrading a school’s infrastructure, or modernizing an office […]
Indoor air quality (IAQ) is no longer a niche concern – it’s a foundational element of occupant health, comfort, and productivity. Among the many pollutants that affect IAQ, Volatile Organic Compounds (VOCs) are some of the most pervasive and problematic. At BAPI, we’ve been talking about VOCs long before it was trendy. In fact, we were one […]
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