St. Louis Zoo, Missouri, USA, 2012 Sea Lion Sound is a new exhibit for the Zoo of St. Louis, opening in June 2012. According to the zoo's website: "For the first time anywhere in North America, visitors will walk through an underwater tunnel into the sea lions' habitat to see the animals swimming all around them! This $ 18 million, 10,400-square-foot exhibit will offer a naturalistic setting for the animals in a landscape inspired by the Pacific Northwest coast.” Behind the scenes a solution was required to keep things cool for communication as the specifications for a chiller allowed for multiple protocols CEA-709, BACnet or Modbus yet the building controls specification stated specifically Modbus communication. The chiller was not available with Modbus communication but with the selecti

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