TEMPERATURE CONTROLLER FOR POSITIVE OR NEGATIVE TEMPERATURE COLD STORAGE ROOMS Control 5 relays, from -50 ºC to +100 ºC. Application: Industrial and commercial refrigeration. Ideal for positive or negative services and ventilated refrigerated units. Defrost using resistances with configurable auxiliary relay. Gas collection manoeuvre (pump-down) selectable per programme. Digital inputs for door switch, high pressure controller, low pressure controller, remote defrost, Set-Point change (energy savings).Allows a 2nd temperature probe to control the evaporator's fans and end of defrost. Does not contain an internal battery.