LED Dimmer Switch 3.7V24V PWM LED Driver Stepless Knob Brightness Controller Module Rectangle

DC3.7V24V PWM LED Dimming Module with Stepless Knob Control Overview A compact, constant voltage PWM dimming module designed for smooth, flicker brightness control of LED strips, desk lamps, fill lights, and advertising light boxes. Available in two form factors to match different power and current requirements. Key benefits Smooth stepless dimming from 0 to 100 percent with no visible flicker. Small, neat enclosure suitable for integration into lighting fixtures and control panels. Builtin switch and knob for intuitive on off and dimming control. Low standby power: zero power consumption in standby after turning the knob off. Input reverse connection protection to reduce risk from incorrect polarity on input. Variants and technical specifications Rectangle type Type: LED constant voltage dimmer Input voltage: DC 3.7 V to 24 V Output voltage: equal to input voltage Maximum load current: 4 A Working mode: constant voltage. Non constant current loads must include current limiting resistors. Standby: zero power consumption after knob is turned off Square type Type: DC power LED dimming module Input voltage: DC 6 V to 24 V Output voltage: equal to input voltage Maximum load current: 5 A Maximum load power: up to 120 W (voltage multiplied by current) Dimming range: 0 to 100 percent stepless, no flicker Includes switch function, constant voltage operation Important usage notes and precautions The module features input reverse connection protection, but it does not include output short circuit protection. Verify wiring before powering on. For dimming effect and efficiency, keep the difference between input and output voltage within 3 V. This is a constant voltage dimmer. LED strings must be configured with appropriate current limiting resistors or built in resistances as required by the light source. Examples for typical LED string arrangements: input 9 V for two LED strings, input 12 V for three LED strings, input 24 V for six to seven LED strings. Ensure each string is current limited. Applications Live broadcast fill lights and photography lighting Small desk lamps and task lighting with adjustable brightness LED strip installations and advertising light boxes requiring stepless dimming What is included Dimming module x1 Accessories x2 Model identification Model: DC3.7V24V LED driver PWM dimming module This module is intended for use with constant voltage LED loads and for applications where smooth, adjustable brightness and compact control are required. Follow the wiring and voltage matching guidelines to ensure reliable performance.