PWM LED Dimmer Module DC 3.7V24V Constant Voltage Stepless Knob Light Strip Brightness Controller Rectangle

DC 3.7V to 24V PWM LED Constant Voltage Dimmer Module Product overview Compact, low profile PWM dimmer module designed for constant voltage LED applications Smooth, stepless brightness adjustment from 0 to 100 percent with no visible flicker Built in on off switch and knob control for intuitive operation Two form factors available with matching specifications for different power needs Key features and benefits Wide input range: rectangle version supports DC 3.7V to 24V; square version supports DC 6V to 24V Stable constant voltage output: output voltage equals input voltage for compatibility with common LED strips and lamp modules Smooth PWM dimming delivers flicker performance, suitable for video and live streaming lighting Low standby consumption: rectangle version registers 0 standby power when knob is turned off Compact appearance and straightforward installation, ideal for small fixtures and retrofit applications Built in input reverse connection protection to reduce risk from incorrect wiring Please note the module has no output short circuit protection; always confirm wiring before applying power Specifications Rectangle version Type: LED constant voltage dimmer Input voltage: DC 3.7V to 24V Output voltage: equal to input voltage Load current: up to 4A Standby power: 0 when knob is off Working mode: constant voltage. Non constant current loads must include resistor current limiting Square version Type: DC power LED dimming module Input voltage: DC 6V to 24V Output voltage: equal to input voltage Load current: maximum 5A Load power: maximum 120W (voltage times current) Dimming range: 0 to 100 percent stepless, no flicker Working mode: constant voltage with switch function Important usage notes The module contains input reverse connection protection but no output short circuit protection. Verify correct cable connections before powering on For dimming effect and efficiency, keep the input to output voltage difference within 3V For LED strings use appropriate series resistance to limit current per string. Example guidance Input 9V: use two LED strings with resistors Input 12V: use three LED strings with resistors Input 24V: use six to seven LED strings with resistors Package contents Dimming module x1 Accessories x2 Typical applications Live broadcast and video fill lighting where stable, flicker dimming is required Small desk lamps and task lights with DC LED strips Backlit signage and advertising light boxes that require smooth brightness control This module provides reliable constant voltage PWM dimming for LED strips and small lighting fixtures while offering simple installation and precise stepless control.