Electric 12V 100W High-flow Brushless Cooling Water Pump W/ PWM Signal Generator. 1PCS DC 12V 100W Brushless Pump. 1PCS PWM Signal Generator. DC12V 100W Brushless Water Pump. This versatile water pump is designed specifically for electric vehicle cooling systems, ensuring excellent quality and reliability. Its exceptional design allows for operation in extreme environments, ranging from minus 40 degrees Celsius to plus 120 degrees Celsius, ensuring lasting and stable performance. Utilizing a brushless DC motor and controlled through PWM, it effortlessly adjusts its speed, showcasing remarkable efficiency, low noise, and high flow rates. Its unique physical isolation design ensures that the pump rotor, motor stator, and drive circuit are separated from the water, ensuring safety and dependability. The pump body is made of aluminum alloy, which is sturdy and has excellent waterproof performance. It is widely used in a variety of fields, including automotive cooling systems, lithium battery cooling systems, server water cooling systems, soilless cultivation water circulation, fish tank water circulation, garden watering, RV water supply, underfloor heating heat circulation, and solar water pumps. Rated Voltage: DC 12V. Operating Voltage: DC 8.5V 16V. Rated Current: 7.5A. Max Flow: 45L/Min (12 GPM). Noise Class form 1M:? 45dB. OD of Inlet: 16&22 mm. OD of Outlet: 16&22 mm. Motor Type: Brushless DC motor. Ideal Life Time: 30,000 Hours. Net Weight: 835g/1.84. Working Fluids: Water, Antifreeze, Low viscosity oil, etc. Power Supply: DC power supply, battery, solar powered. If PWM Speed Control is Used. If there is no PWM signal within 2 seconds of power-on, the default mode of full speed operation will be used. If there is a valid PWM signal, a speed-proportional response to a commanded 13-90% duty cycle will be delivered. Recommended PWM frequency: 50Hz to 200Hz (nominal = 100Hz). Recommended PWM Duty range: 13 – 90%. The water pump operates at its minimum speed when the PWM duty cycle is 13%, and it reaches its maximum speed when the PWM duty cycle is greater than 90%. 1, The positive and negative poles of the pump must be connected correctly to prevent damage to the pump. The working voltage range of the pump is DC8.5V to 16V. 2, The maximum power of the pump is 100 watts. A power supply with a capacity greater than 100W must be used, otherwise the pump may not work properly. 3, The pump should only be used with clean liquid to prevent clogging and damage to the pump. If the liquid contains granular impurities, a filter should be installed at the inlet to prevent the impurities from entering the pump. 4, The water pump needs to have water for testing; otherwise, it will detect the lack of water and stop working. Testing the water pump without water will cause it to start and stop multiple times, eventually leading to a protective shutdown. 5, The pump has no self-priming ability. The pump inlet must be below the water surface for the pump to work. Alternatively, the entire pump can be immersed in water. The pump is waterproof and can be used as a submersible pump. We will send a connecting wire with each pump, the orange wire is connected to the positive pole of the power supply, the black wire is connected to the negative pole of the power supply, and the green wire is the PWM speed control wire (if you do not need speed control, just donot connect the gree wire). PWM signal generator is a device that provides electrical signals at a variety of frequencies, square wave, and output levels. It is used as a signal source or excitation source for testing. Widely used in production practice and technology. LCD high definition display. Support duty cycle adjustment. Support power-down memory function. Product name: PWM Signal Generator. Work voltage: DC 3.3V-30V. Duty cycle range:0.00%-100%. Output Current: About 5-30mA. Output amplitude: Same to input voltage. Enter the settings interface when short press any button’FREQ+’ or’FREQ-‘ in the normal running status to select frequency range. Automatically switch frequency range. Pay attention to the position where the decimal point moves when the button is pressed. No decimal point, The minimum frequency is 1Hz. The frequency range is 1Hz 999Hz. The decimal point is the penultimate, The minimum frequency is 0.01KHz. The frequency range is 1.00KHz 9.99KHz. The decimal point is the third last, The minimum frequency is 0.1KHz. The frequency range is 10.0KHz 99.9KHz. The decimal point is fully lit, The minimum frequency is 1KHz. The frequency range is 1KHz 150KHz. Display’100′ means PWM output frequency is 100Hz. Display’1.01′ means PWM output frequency is 1.01KHz. Display’54.1′ means PWM output frequency is 54.1KHz. Display’1.2.4′ means PWM output frequency is 124KHz. Duty cycle set range. Enter the settings interface when short press any button’DUTY+’ or’DUTY-‘ in the normal running status to select duty cycle. Duty cycle range is 0.00%-100%. Connect to power supply. Short or long press button’FREQ+’ or’FREQ-‘ to set frequency. Short or long press button’DUTY+’ or’DUTY-‘ to set duty cycle. UART communication and parameter settings. The system supports UART data upload and parameter setting functions (TTL level). UART: 9600, 8, 1. F101′:Set frequency is 101Hz. 101′ can by replace by 001999. F1.05′:Set frequency is 1.05KHz. 1.05′ can by replace by 1.009.99. F10.5′:Set frequency is 10.5KHz. 10.5′ can by replace by 10.099.9. F1.0.5′:Set frequency is 105KHz. 1.0.5′ can by replace by 1.0.01.5.0. Set PWM duty cycle. DXXX': Set duty cycle is XXX. XXX’ can be 000-100. G:’D051′ means PWN duty cycle is be set as 51%. Send’read’ and then get parameter. Return’DOWN': Set success. Return’FALL': Set fail. Square wave signal generator, generating square wave signal for experimental development. Used to generate a square wave signal that controls the motor driver. Generate adjustable pulses for use by the MCU. Note: It’s 1-channel PWM output signals are the same. They can not adjust independently.