2CH 4-Wire LED Digital PWM Motor Speed Controller with Temperature Control & Buzzer Alarm – DC 12V/24V/48V (50cm Cable)

This 2CH 4-Wire LED Digital PWM Motor Speed Controller enables precise, temperature-based speed regulation for DC fans and motors operating at 12V, 24V, or 48V. It supports Intel’s four-wire PWM fan standard, allowing independent control of two fan channels with real-time temperature and RPM monitoring via an LED display.

This 2CH LED fan speed regulator controller features programmable minimum speed and temperature thresholds, automatic speed adjustment, and a buzzer alarm for fan failure detection (below 375 RPM). Designed for reliability, it operates within a wide input voltage range (DC 8–60V) and supports high-current fans when wired directly to the main power supply. Ideal for industrial cooling, server racks, power electronics, and DIY projects requiring intelligent thermal management.

Features:

• Dual-channel independent temperature and speed control with LED digital display
• Supports 4-wire PWM fans compliant with Intel specifications (12V, 24V, 48V)
• Programmable minimum fan speed (10%–100%) and temperature control zones via button settings
• Real-time monitoring of temperature (-9.9°C to 70.1°C) and fan speed (10–9990 RPM, 10 RPM resolution)
• Built-in buzzer alarm for fan stop detection (triggers when speed < 375 RPM)
• Ultra-wide working voltage range: DC 8–60V (board level)
• Fan control output range: 10%–100% PWM signal
• High current handling: up to 3A per interface pin; larger fans can be powered directly from main supply
• Compact PCB size: 65mm × 65mm × 15mm with 56mm mounting hole spacing

Specifications:

• Model: 2CH 4-Wire PWM Fan Controller
• Working Voltage (Board): DC 8–60V
• Fan Supply Voltage: DC 12V / 24V / 48V (fan-dependent)
• Control Method: 4-Wire PWM (Intel Standard)
• Channels: 2 (Independent)
• Temperature Range: -9.9°C to 70.1°C (error <1°C)
• Speed Measurement: 10–9990 RPM (10 RPM resolution)
• Stop Alarm Threshold: <375 RPM
• PWM Output Range: 10%–100%
• Max Interface Current: 3A per pin
• Control Inputs: Buttons for speed and temp settings
• Display: LED Digital (alternating temp & RPM)
• Cable Length: 50 cm
• PCB Dimensions: 65mm × 65mm × 15mm
• Mounting Hole Spacing: 56mm × 56mm (Ø 3.2mm)

Application:

• Industrial motor and fan speed control
• Server and telecom rack cooling systems
• Power supply and inverter thermal management
• DIY electronics and embedded cooling projects
• Electric vehicle battery and controller cooling
• High-power amplifier and laser driver temperature regulation

Package Includes:

• 1 × 2CH 4-Wire LED Digital PWM Motor Speed Controller (with 50cm cable)