| The Davies Craig Variable Speed Thermatic® Fan & EWP Controller (Part #0550) offers advanced, intelligent control specifically for modern brushless cooling setups. Instead of a basic on/off switch, it uses high-tech PWM signals to automatically modulate fan or water pump speeds based on real-time engine temperature. This delivers maximum cooling efficiency, less load on your alternator, and optimal engine protection. ???? NOT SURE WHICH CONTROLLER YOU NEED? Look at the electrical plug coming directly out of your cooling fan: - Does your fan have 3 or 4 wires? (Modern Brushless data-signal setups) → THIS IS THE RIGHT PART! Buy this #0550 controller.
- Does your fan have exactly 2 wires? (Standard positive & negative) → STOP! This controller will not run your fan. You need the Davies Craig Brushed 2-Wire Controller (Part #0555).
Why Choose This Brushless Controller? - Dual Brushless PWM Channels: Features two fully isolated pulse-width modulation signal channels to control modern brushless fan or pump electronics independently.
- 12V & 24V Universal Fitment: Engineered to integrate flawlessly into both 12-Volt and 24-Volt electrical wiring systems.
- Adjustable PWM Frequency: Allows customized digital frequency tuning on the controller to perfectly match specific aftermarket or factory brushless fan profiles.
- Post-Run Heat-Soak Prevention: Keeps the cooling cycles running for a user-defined time after the engine key is turned off, dropping temps safely.
- Smart System Failsafe: If a temperature sensor ever becomes disconnected or fails, the controller automatically triggers 100% full cooling speed.
- IP67 Waterproof Build: Fully sealed waterproof casing protects internal electronics from water, dirt, and mud under the bonnet.
Guaranteed Fan Compatibility This controller is custom-calibrated for modern high-performance brushless electric cooling assemblies, including: ❌ SPAL Fan Warning: This controller WILL NOT run standard 2-wire SPAL "EF" series fans. If your SPAL fan has a 2-wire plug, use the DC-Davies Craig Fan & EWP Controller 0555 instead. Davies Craig Brushless Thermatic® Fans: ✅ Direct plug-and-play fitment for Davies Craig brushless models: DC-0121, DC-0122, DC-0123, DC-0124, DC-0125, DC-0126, V0127, and DC-0128. What's Included In The Kit? This kit comes complete with dual sensors out of the box to offer maximum installation flexibility: - Sensor 1 (Radiator Probe): Easily slides directly into your radiator's cooling fin section to monitor core temperatures without cutting hoses.
- Sensor 2 (1/4" NPT Thermal Sensor): Threads directly into threaded ports on your thermostat housing, engine block, or radiator tank for direct fluid readings.
- Optional Upgrade Fitment: Can be paired with an M12 x 1.5 Thermal Sensor (Part #0462, sold separately) to fit factory spare modern sensor holes.
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