... the Caross constant temperature and constant humidify equipment Caross Precision Air Conditioning Model : PDU25 cooling capacity: 26.9KW High ... environments. Operation in temperatures up to 45C make the unit suitable for all . Multiple Units can be connected together ... :1,up-flow plenum 2,smok /fire detectors3,water leakage sensor4,water laeakage belt sensor5,clock card6,RS485 serial interface7,touch ...