Eastwood Company 66459 Derale PWM Digital Fan Controller with Temperature Sensor

The Derale Performance Digital PWM Fan Controller revolutionizes engine temperature management with intelligent, reaction-free cooling control. Unlike traditional on/off fan systems that cycle at 100% power, this advanced controller continuously monitors engine temperature and modulates fan speed from 1-100%, keeping your cooling fans running only as fast as needed—typically just 40-60% for optimal cooling efficiency.

Key Features:

• Pulse Width Modulation (PWM) technology provides precise fan speed control from 1-100%
• Flush-mount temperature sensor installs on radiator side for accurate coolant monitoring
• Soft Start Technology eliminates harmful amperage spikes during fan startup
• Built-in A/C override circuit ensures maximum cooling when air conditioning is engaged
• Post-shutdown cooling runs fans for 20 seconds after ignition off to prevent heat soak
• Controls up to 70 amps combined load—supports multiple 12-volt brushed electric fans
• Reduced fan speeds mean quieter operation and less competition with exhaust note
• Simple installation wires directly between battery and electric fans

By maintaining steady, optimized fan speeds instead of constant on/off cycling, this controller reduces electrical system stress, minimizes fan noise, extends component life, and improves overall cooling efficiency. The flush-surface mount sending unit provides clean installation and accurate temperature readings for precise control. Compatible with any 12-volt brushed electric fan configuration up to the 70-amp threshold.