Dwyer PMI-10WC-RLY-N is a particulate matter transmitter with a temperature range of 32 to 122°F and an accuracy of ±10 µg/m3. It operates on a power requirement of 16-28 VAC/6-35 VDC and has a response time of <10s. The transmitter has a range of 0-500 µg/m3 and 0-600 µg/m3 for particle sizes of 0.3-2.5 µm and 0.3-10 µm, respectively. It has an enclosure rating of IP30 for wall mount and IP65 for duct mount. The sensor used is laser scattering. It has a humidity range of 0-95% RH, and the enclosure material is polycarbonate for wall mount and ABS and polycarbonate for duct mount. The transmitter has various output options including current, voltage, relay, and RS-485/Modbus®. It has a service life of up to 8-10 years and a load resistance of ≤500 Ω for current output and ≥2 kΩ for voltage output. Optional 4-digit LCD display is available.