Met Éireann invites tenders for the supply and support of Visibility Sensors for it's Coastal Visibility Network Project. Bidders are asked to quote: A. For the Visibility Sensor only. B. For the Visibility Sensor and Data Logger as a complete ready to install unit, including sensors, data loggers, enclosure, fixing hardware, software, etc., that are available for their respective VS units, and any optional attachments, that offer additional functionality over their basic systems. C. For The Visibility Sensor and enclosure and accessories as detailed at B above, except for the data logger. The purchasing authority may decide to purchase a combination of sensors or additions from the winning bidder as decided by the evaluation team.