Manufacturer Part Number: 3-74-7035
The M-Class series of spa controls is a powerful, fully featured control system for mid-range spas with a variety of accessorial components.  Among its many features: Sensor failure detection Ozone management Programmable filter cycles High-limit protection Pressure switch failure detection Current limiting option Smart Winter Mode Temperature accuracy within ± 1°F Overtemp mode protection Overtemp protection on filter cycle DJS-1 compatible (optional) Real time clock (optional) This M-Class control box only contains circuits fitted with JJ-Mini style receptacles that will operate the following equipment: Pump1 &2, 1-spd or 2-spd, 115/230v Pump3, 1-spd, 115/230v Blower 115/230v Circulation Pump 115/230v Ozone, 115/230v Light 12v Fiber Light, 115v (2) Hot Accessory Receptacles Dimensions of control system: Heater: 2” x 15” Box Height 15” Box length  13” Box Width  4”
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