Heat Pump--Controller 1,R404A,work at -20~40C 2,noise:<55Db,cop: ... .0 3,voltage:380 to 460v,50/60hz,3ph Heat Pump--ControllerTechnical parameters:MD200DRated input power: 18.4kwHeating capacity: 72kwCooling capacity ... been tested and desighed in accordance with Europen standards. Heat Pump Controller