Davis 24-Hour Fan Aspirated Radiation Shield (no sensor)

Our 24-Hour Fan-Aspirated Radiation Shield helps maximize the accuracy of sensor readings.

A motor-driven fan draws a constant airflow through the sensor chamber at 500 feet per minute (2,5 m/s).

- A motor-driven fan draws a constant airflow through the sensor chamber at 500 feet per minute (2,5 m/s). At night, when the effects of radiation are less, this solar-powered model runs on battery power and the airflow slows to 280 feet per minute (1,4 m/s). Install your own sensor in the sensor chamber. Sensor chamber: 2.24" x 3" (56,8 mm x 76,2 mm). Includes 10 plates, rechargeable batteries, mounting hardware, and 25 ft. (7,6 m) cable.