A/1.8K-O-EH - 1.8K Ohms @ 77 Deg F (25 Deg C) Thermistor The standard outside air configuration is based on an European style enclosure that locks out moisture with a gasketed cover and watertight fitting. They are designed to be mounted flush to an exterior wall.

A/1.8K-O-SUN - The ACI Sun Shield is a reliable solution for protecting temperature and relative humidity sensors. It consists of nine molded plastic plates which provide maximum airflow around the sensor while at the same time minimizing direct exposure to sunlight. The passive shield is shaped to allow natural air convection around the sensor so that the air temperature inside the shield is a good representation of the outside air. The shield also provides protection from rain and snow. The ACI SUN SHIELD is covered by ACI's Five (5) Year Limited Warrant which is located in the front of ACI's Sensors & Transmitters catalog or can be found on ACI's web sit which is www.workaci.com.