Feature: 1. Fit for soft start of water pump, fan, vehicle and ordinary single-phase motor, such motor start module keeps super simple wiring. 2. Soft start controller enables to replace adjustable auto-transformer, inverter soft start, etc. 3. No need to connect bypass contactor, economical and practical, such motor controller is powerful. 4. With high performance for a long time, motor start board is entitled with practical adoptability. 5. Depends on motor start module's simple installation, it is not require particularly complicated operations. Specification: Item Type: Motor start board Model: SSR-40WA-R1(1.5KW) (with soft start without soft stop) Two Ways to Use: 1. When the switch is closed, the main power supply is energized and the soft start begins. 2. Use the switch to control, start by closing the soft start, open the stop The function of two potentiometers in single phase soft start module: For example: 2. Power supply 380V: Fully adjusted to half, start 95V, soft start time about 22 seconds Approx. 74mm / 2.9in Approx. 47mm / 1.9in Approx. 104mm / 4.1in Approx. 35mm / 1.4in Approx. 43mm / 1.7in Size 2: Approx. 125mm / 4.9in Approx. 80mm / 3.1in Approx. 110mm / 4.3in Approx. 28mm / 1.1in Approx. 100mm / 3.9in . Package List: 1 x Module