PWM / DC controller 4.5V-35V 5A 20kHz Max 90W

Specifications: Operating Voltage: DC 4.5V – 35V Output Current: 0–5A Maximum Output Power: 90W Standby Current: 7 µA PWM Duty Cycle: 1% – 100% PWM Frequency: 20 kHz Size (without knob): 30 × 25.7 × 14 mm Weight: 15.1 g Application: This PWM controller is designed for adjusting the speed or power of simple DC loads such as brushed DC motors or low-voltage lighting. It operates by switching the ground (negative side) using PWM control. ✅ Suitable for: 2-wire brushed DC motors DC lamps or resistive loads Simple fan or motor speed control (that doesn't require logic-level signal input) ❌ Not suitable for: 4-pin PWM fans that require a separate 5V logic-level PWM signal Loads that require high-side switching (PWM on V line) AC-powered devices (e.g., 220V mains appliances) Devices that cannot tolerate PWM switching on the ground side ⚠️ Using AC voltage will damage the module. Use only with DC power supplies. Wiring Instructions: V / V−: Connect your DC power input (e.g., 12V DC supply) M / M−: Connect your load (motor, light, etc.) M is directly connected to the power input (V ) M− is the PWM-switched output (pulsed to ground) Adjust the potentiometer to change the PWM duty cycle, which controls the output power to the load. Safety Notes: Double-check polarity before powering up The controller's potentiometer features an integrated ON/OFF switch. The unit is turned on by rotating the knob clockwise past the click position, and turned off by rotating it fully counterclockwise until it clicks. Do not exceed the rated current or power This controller does not produce a logic-level PWM signal — it modulates power by switching the negative side of the load Not suitable for PC fans or devices that expect a clean 5V PWM input on a signal wire