We have a number of controllers & switches to manage either an Electric Water Pump (EWP®), Electric Booster Pump (EBP), Electric / Thermatic® Fan or both.


Part #8002 - EWP®/ Fan Digital. Controller Kit (12V/24V) (*replaced part 8001)

Part #0500 - Digital Gauge Thermatic® Fan / EWP® Switch Kit 

Part #0444 - Digital Thermatic® Dual Fan Switch Kit

  • Part #0445 - Digital Thermatic® Fan Switch with 1/4" NPT Thermal Sensor Kit
  • Part #0448 - Digital Thermatic® Fan Switch with 1/8" NPT Thermal Sensor Kit
  • Part #0435 - Digital Thermatic® Fan Switch with 1/4" NPT Sensor & 35mm Inline Adapter Kit
  • Part #0438 - Digital Thermatic® Fan Switch with 1/4" NPT Sensor & 38mm Inline Adapter Kit

Part #0401 - Mechanical Thermatic® Switch Kit (12 & 24V)

  • Part #0400 Mechanical Thermatic® Switch Combo (12 & 24V)
  • Part #0404 Mechanical Thermatic® Switch (12V & 24V) plus Relay for Air-Con

*Adaptor: Part #0409 - Temperature Sensor Adaptor Kit


Specs Part #0401 Part #0444, 0445, 0448, 0435, 0438 Part #0500 Part #8002
Operating Voltage 12 & 24 Volt

12 Volt standard

24 Volt relays required

12 Volt standard

24 Volt relays required

12 & 24 Volt
Maximum Current 20 Amps 40 Amps  40 Amps or relay rating 12 Amps EWP® Only
Single Fan Control null null null null
Duel Fan Control  Wiring Dependant null null Wiring Dependant
EWP® control ON / OFF ONLY (USE 8002) ON / OFF ONLY (USE 8002) ON / OFF ONLY (USE 8002) null
EBP control null null null null
EWP®/EBP and Fan control  Wiring Dependant null null EWP and Fans only
Single Fan/EWP®/EBP Application All DCPL Fans, EWP® & EBPs All DCPL Fans, EWP® & EBPs All DCPL Fans, EWP® & EBPs All DCPL Fans & EWP®
Duel Fan Application Relay Switching Current MAX 15A All Fans (MAX 30A Each) All Fans All Fans (Wiring Dependant)
Speed Single Speed Single Speed Single Speed Single speed Fan & Variable EWP®  
AC Override Wiring Dependant ( use 0404) null null Selectable Fan Override null
Sensor Wire Length 110cm

142cm in total (Wire from switch 112cm plus sensor connector 30cm)

Post 15-Dec-2021 = 320cm total (Wire from switch 290cm plus sensor connector 30cm)



Increase to 380cm (Oct 2020)

Coolant Temperature Detection null


(0444 Requires #0409 or #0465)

(0445 comes with 1/4" NPT Thermal Sensor)

null (Requires #0409 or #0465) null
Duel Fan Start-Up Delay null 10 Seconds Independent set Temp null
Temperature Setting Range 40°C To 100°C (104°F To 212°F) 40°C To 110°C (104°F To 230°F) 5°C To 110°C (41°F To 230°F) 40°C To 110°C (104°F To 230°F)
Temperature Setting Method Turn Knob Push Button Push Button Push Button
 Mounting position Engine bay Engine bay Vehicle Cabin Vehicle Cabin
Dimensions 35mm x 58mm x 45mm 95mm x 65mm x 56mm Universal 52mm Gauge 98mm x 95mm x 25mm
IP66 Rated null null null null
Temperature Display null null null null
Set Temperature Display null null null null
Fan Operation Indicator null null null EWP® and Fan
Temperature Set Indicator null null null null
Fault Display null null null null
°C Setting null null null null
°F Setting null null null null
°C D °F Change null null null null
Air Temperature Detection null null null null
Accessories Part #1000, 1001, 1002, 1003 Part #1000, 1001, 1002, 1003 Part #1000, 1001, 1002, 1003 Part #1000, 1001, 1002, 1003
Part #0400 (#0401 + #0409)  Part #0409 Part #0409, #0465, #10534  Thermatic® Fan 
Part #0422 (Duel Fan Only) Part #0422 (Duel Fan Only) Part #0422 (Duel Fan Only) EWP® Header Adaptor Kit
EWP® Digital Controller Combo




(PATENTS: USA 6425353, EU 1133624, AUS 756453)

For optimum control of Davies, Craig 12 Volt and 24 Volt Electric Water Pumps.
Suits EWP®80, EWP®115, EWP®130, EWP®150 and Thermatic® Fans.

The EWP® / Fan Digital Controller has two specific functions. This unique Digital Controller will manage the operation of the EWP® by varying the speed of the pump in response to the coolant temperature and manage control of your electric engine fan.

The Controller has a push-button to lock in any targeted/set temperatures between 40°C (104°F) to 110°C (230°F) . It’s highly recommended you set/target the Controller to closely match your engine’s existing thermostat temperature.

Generally, higher engine temperature will offer improved fuel efficiency and lower engine temperature more power. The Digital Controller will operate the engine’s electric fan automatically once the engine has reached 3°C (5.4°F) above the targeted (set) temperature. Another significant benefit is that the Controller allows
the EWP® to run on after ignition shutdown to eliminate heat soak.
null  Black & White Numerical LCD Screen

null  Mounting options; bracket or nylon plate

null  Suitable for 12v & 24v electrical systems, with relevant displays
null  Celsius or Fahrenheit display option
null  Warning Alarms: 

- Plus 10°C (14°F) set/target temperature
- Under temp 40°C after 5 mins
- Temp sensor error
- Over or under voltage
- EWP® error

null  Select any set temp range from 40°C (104°F) to 110°C (230°F)
null  Set / targeted temperature memory
null  Override feature to assist bleeding EWP® & fail safe
null  Input voltage display
null  Compatible with billeted style Electric Water Pumps

null  Genuine Thermometer, with coolant and targeted/set temp. displays

null  Diagnostic check & warm-up signals

null  Flashing “EWP®” logo signifying water pump in operation

null  Davies Craig Thermatic® Fan logo, circulating signifying fan in operation

null  Flashing High & Low Voltage indicators

null Low & High Temp indicators

null  Above Set/Target Temperature indicator accompanies audible alarm

null  Temperature Sensor short & open circuit indicators

null  Automatic time-out, EWP® runs for 3 minutes or until engine temp has reduced to -10◦C (-14F) below set/targeted temp whichever occurs first.


The  Davies, Craig LCD EWP®/Fan Digital Controller (#8002) as an engine management component has undergone extensive research, development, vehicle and test centre scrutiny.

     Technical Specification - LCD Controller
Voltage range 12V DC to 29V DC
Display LCD size 64.6mm (2.54”) x 55.6mm (2.19”)
Maximum current 12Amps
Warning alarm High & low Temp., Above set temp., Sensor short circuit, Pump error, High & low voltage and Sensor open circuit
Targeted (set) temperatures Singular degrees from:
40°C (104°F) to 110°C (230°F)
Memory Set & targeted temperature
Fan cut-in temp. 3°C (5.4°F) above the targeted (set) temperature
Controller type PCB with micro-processor
Sensor type Thermister in housing
Overrun/ shutdown -10°C (14°F) below set/target temperature or 3 minutes
Indicators Temperature, power, EWP®, test, fan, high & low temp, voltage, above set temperature (with alarm)
Weight 100 grams (3.5 oz)

Length = 98mm (3.8")

Width = 95mm (3.7")

Depth = 25mm (1”)



A Thermal Switch is a device which senses the temperature of the coolant and turns on the electric fan when cooling is needed over a wide range of temperatures. Davies Craig offers two types of switches, a mechanical & electronic version.


MECHANICAL THERMAL SWITCH - PART No: 0400, 0401 & 0404 (12 & 24 VOLT) 

The Mechanical Thermal Switch is adjustable from 40° to 100°C (104° to 212°F).
It is mounted near the radiator and the stainless steel probe fitted inside the radiator hose making contact with the coolant. The mechanical thermal switch is then connected to the  ignition circuit for operation. The thermal switch & relay kit (Part 0404) enables a fan to operate both thermally and also when the air conditioning is running.




Part #0444 - Digital Thermatic® Dual Fan Switch Kit

  • Part #0445 - Digital Thermatic® Fan Switch with 1/4" NPT Thermal Sensor Kit
  • Part #0448 - Digital Thermatic® Fan Switch with 1/8" NPT Thermal Sensor Kit
  • Part #0435 - Digital Thermatic® Fan Switch with 1/4" NPT Sensor & 35mm Inline Adapter Kit
  • Part #0438 - Digital Thermatic® Fan Switch with 1/4" NPT Sensor & 38mm Inline Adapter Kit

Davies, Craig Pty Ltd very own designed Digital Thermatic Fan Switch Kit can be used with our Thermatic Fans, EWP®'s & competitors Fans. It senses air temperature as it passes through the radiator or can be placed directly into coolant and has an adjustable temperature range of 40ºC to 110ºC (104ºF to 230ºF).

  • This switch is operated thermally & also when the air conditioning is in operation.
  • Simply set the temperature by pressing the set button.
  • It can run 1 or two fans. The second fan (if applicable) will start 10 seconds after Fan #1 runs.
  • To convert temperature reading from Centigrade to Fahrenheit, remove the Jumper Pin on the unit next to the LED screen.
  • IP66 Rated



PART #0500 (12 & 24 Volt)

A bright, attractive, compact high visibility 52mm round gauge with LED digital display for mounting in the driver’s compartment!

Automatically activates single or twin fans or a fan and Electric Water Pump at your set / targeted temperature when extra cooling is required. It can also detect transmission fluid temperature.

It senses air temperature as it passes through the radiator with the sensor placed in the radiator fin section or alternatively the sensor can also be placed directly into the coolant system in combination with a Temperature Sensor Adaptor Kit (Part 0409).

The kit is sold in 12 Volt configuration.

*For 24 Volt application: 2 x 24V Relays required, sold separately (Part #10534)

  • Independent set temperature for Fan 1 and Fan 2
  • Universal 52mm gauge design.
  • Extra-long temperature sensor wires 380 cm
  • Can detect ambient temperature (air) as standard
  • Can detect coolant temperature
    • Use #0465 for OE style 1/4 “NPT port install
    • Use #0409 for radiator hose install



Now there is no need to squeeze the probe of the Mechanical Thermal Switch or EWP® Controller between the radiator inlet and radiator hose. This simple and economical Adaptor Kit allows easy fitting directly into the radiator hose. Just fit probe into compression fitting, remove about 17mm of radiator hose, fit adaptor between each end of hose, secure hose clamps and the job is done. The kit comes with everything you need for a watertight and effective installation. We even supply rubber sleeves to enable fitment to radiator hose sizes from 32 to 40 mm diameter.


The Low Coolant Level Alarm Kit will monitor the coolant level in engines and will immediately identify low coolant should this situation develop. This cool new device comes with a loud audible alarm and will help prevent an over-heating engine and significant engine failure. The unit simply fits into your engine’s top radiator hose and will alert you to the loss of engine system coolant via an audible alarm. This situation may occur when a radiator hose splits or frays, a radiator springs a leak and the engine’s coolant is either low or lost. The vehicle’s simple temperature gauge will not alert the driver to this event and the Low Level Coolant Alarm adds security to assist monitor your engine’s coolant level. Loss of engine coolant can cause the water pump to lose pressure and will quickly develop into to an overheated engine. Most engine temperature protection systems and gauges will not detect coolant loss as they rely on sensing the coolant temperature. When the coolant is lost, the gauges cannot sense engine temperature and as such expensive engine failure may occur.