The 0444 Switch is available for purchase in following options:

  • Switch Only with Air temperature Sensor (0444)
  • 0444 with additional 1/4"NPT Threaded sensor (0445)
  • 0444 with additional 1/8"NPT Threaded sensor (0448)
  • 0444 with additional 1/4"NPT Threaded sensor and 35mm adaptor kit (0435)
  • 0444 with additional 1/4"NPT Threaded sensor and 38mm adaptor kit (0438)

Davies Craig very own designed Digital Thermatic Switch Kit can be used with our Thermatic Fans, EWP's and competitors Fans.

The sensor, a Temperature Probe (Air or Coolant Fitment) senses air temperature as it passes through the radiator with the sensor placed in the radiator fin section or the sensor can also be placed directly into the coolant system in combination with a Temperature Sensor Adaptor Kit (Part 0409) which is available from our store.

The switch can run 1 or 2 fans and be used for 12v or 24v applications. It has an adjustable temperature range of 40ºC to 110ºC (104ºF to 230ºF) the display can show Centigrade or Fahrenheit.

  • Fan #1 will start once the temperature reaches the set temperature.
  • Fan #2 (if applicable) will start operation 10 seconds after fan #1 starts.
  • The fan/s will operate until the temperature falls by 5°C below the set temperature.

    IP66 Rated:

  • Protected from total dust ingress
  • Protected from high pressure water jets from any direction, limited ingress protection
  • Not waterproof
  • TECHNICAL SPECIFICATIONS
    Operating voltage 12V DC to 27V DC (For 24V, change of relay required)
    Maximum current Rated to 30A per fan
    Relay Setup Dual Relay
    Sensor Wire Length 142cm in total (Wire from switch 112cm plus sensor connector wire of 30cm)
    Speed Single speed, 10 second delay to start second fan
    Applications Suitable for single and dual fan(s)
    Screen Display LED Digital temp display, actual temp + set temp
    Temp Display Centigrade or Fahrenheit
    Temp Settings 40° to 110°C (104° to 230°F)
    Set Temp Adjustment Push Button
    Output Wires Batt+ve, Batt-ve, AC Clutch, Fan#1, Fan#2, Thermistor Probe
    Dimensions 95 x 65 x 56mm
    KIT CONTENTS
    DESCRIPTION UNITS
    Digital Fan Switch IP66 1
    Thermal Sensor Probe 1
    Mounting Kit for Thermal Sensor Probe 1
    Red 6mm Ring Terminal 1
    Blue 6mm Ring Terminal 1
    Blue Wire Joiner 2
    Self Tap Screw 2
    Instructions 1

    24 Volt Application

    The kit is sold for 12V applications, for 24V applications you will need to purchase a 24v relay for each electric fan.

    OPTION 1 - AIR TEMPERATURE APPLICATION

    The stainless steel probe senses the air temperature as it passes through the radiator and has an adjustable temperature range of 40ºC to 110ºC (104ºF to 230ºF). The Temperature Sensor is placed in the radiator fin section as close to the hot coolant inlet as possible, no need to cut hoses.

    OPTION 2 - WATER / COOLANT APPLICATION

    The 0444 sensor can also be placed directly into the coolant system. You will need to use a Temperature Sensor Adaptor Kit (Part 0409) to assist with this type of fitment. Alternatively you can purchase parts 0435 (35mm adaptor) or 0438 (38mm adaptor) which have everything you need.

    *Note: if using this switch for use with our EWP's, it will not vary the speed of the pump in response to engine temperature but rather turn the pump on and off at your set temperature. For EWP control, we would recommend part number 8002 which can manage both the EWP and your Thermatic Fans.

    - There are other options on how to operate your Davies Craig Electric Water Pump, Thermatic Fan or Booster Pump which can be found here - Davies Craig Switches & Controllers

    DIGITAL THERMATIC SWITCH COMPARISSON TABLE
    0444 0445 0448 0435 0438
    Air Temperature Sensor Yes Yes Yes Yes Yes
    Threaded Temperature Sensor No Yes - 1/4" NPT Yes - 1/8" NPT Yes - 1/4" NPT Yes - 1/4" NPT
    Sensor Adaptor Kit No No No Yes for 1/4" NPT Yes for 1/4" NPT
    0444 - Read more 0445 - Read more 0448 - Read more 0435 - Read more 0438 - Read more