Dwyer PMI-10WA-RLY-B Particulate Matter Transmitter is a reliable air quality component. It operates in a wide temperature range of 32 to 122°F and has an accuracy of ±10 µg/m3. The transmitter requires 16-28 VAC/6-35 VDC power and has a fast response time of <10 s. It offers a range of 0-500 µg/m3 for PMI-2.5 and 0-600 µg/m3 for PMI-10. The housing has an IP30 enclosure rating for wall mount and IP65 for duct mount. The transmitter utilizes a laser scattering sensor and can efficiently measure humidity levels up to 95% RH. It provides multiple output options including current, voltage, relay, and RS-485/Modbus®. With a long service life and optional LCD display, it is a durable and versatile air quality monitoring solution.