Campbell Scientific, Inc. offers a wide range of surface temperature sensors, including: SI-111-PW infrared radiometers (for pre-wired enclosures), SI-111 infrared radiometers, CWS220 900-MHz wireless infrared radiometers, CS220-L surface-mount (Type-E) thermocouple sensors, and 110PV-L surface mount thermistors. CWS220 radiometers have operating temperatures ranging from -25 to +50°C, output signals ranging from 0 to 2500 mV, and wavelength ranges from 8 to 14 μm. These sensors have applications for water, snow, soil, plant, and road surface temperature measurements.