Audible Engine Temperature Alarm + Low Oil Pressure Protection Alarm + Independent Control of Cooling Fan On and Off Temperatures

TM4 Single Sensor Specifications and Features:

• Suitable for every vehicle make and model. The TM4 Single Sensor can also be installed in any type of boat.
• LCD display with automatic white back light.
• Unit displays 14 different alarm and information messages.
• Unit alarms using an inbuilt 85 db buzzer, indicator light and display messages.
• The temperature in the alarm memory briefly displays each time you start up so you know if it has been altered.
• Suits all water or air-cooled engines.
• Suits 12 or 24 volt DC systems and is fully reverse polarity protected. Power consumption is only 15 mA with no alarms on.
• Compact size: Less mounting tabs 80 x 30 x 60mm (3.2" x 1.2" x 2.4")
• Two different mounting lids are supplied with the unit. One lid comes with mounting tabs at each end for under dash mounting, the other lid supplied has no mounting tabs to allow for installation on and behind the dashboard.
• TM4 Single Sensor: Maximum display temperature is 125 degrees C. The alarm is set in one degree increments from 1 to 125C.
• TM4 Single Sensor F: Maximum display temperature is 255 degrees F. The alarm is set in two degree increments from 34 to 255F.
• Standard sensor wire length is 4m (12ft) or they can be ordered to size for long vehicles.
• Warranty - 2 years from date of purchase. The TM4 Single Sensor is not a 'throw away' item, it will give a life time of service and replacement parts are inexpensive and freely available.

ENGINE WATCHDOG TM4 Single Sensor includes the electronic 'Easy Fit' Heat Sensor, installation kit and simple fitting instructions.

Plus, you get FREE POSTAGE & FREE OPTIONS. See the free options list below.

Free Options

NOTE: The following options are free, but we must be advised prior to shipment by an email or a note in Paypal.

1. FAHRENHEIT UNIT USA & Canadian Customers – The TM4 Single Sensor can be switched to read in Fahrenheit, Specify Model 'TM4F' when ordering (reads in two degree increments from 34 to 255 degrees F) Please Note - All TM4's sent to the USA will be TM4F units unless otherwise specified. Canadian customers should still specify the model required.
   
   
2. LONGER SENSOR LEADS The standard sensor wire length is 4m (12ft). Please specify the length you require up to 6 metres (20ft) by email before shipment. If over 6 metres there is a small surcharge, please contact Engine Watchdog on 07-3277 6770 or go to our website.

The Engine Watchdog TM4 Single Sensor is used by professional racing teams for good reason –

• TM4 Single Sensor uses the most reliable monitoring method
  All engines radiate heat to their outer casing at a constant rate (air cooled engines depend on it).The TM4's electronic 'Easy Fit' heat sensor simply fits like a washer under any suitable bolt that is close to the cylinder head or engine block. Here it accurately monitors the engine's metal temperature and if overheating is detected for any reason, the TM4 alarms with an alarm light, loud buzzer and 'Engine Hot' message.
 
• The TM4 Single Sensor tells you exactly what's going on under the bonnet
  Many factory fit gauges indicate normal after you drive just a few kilometres and then do not alter on even the hottest days. Obviously the engine temperature is constantly altering as you drive in varying traffic and road conditions, yet the gauge is not responding. This is because they have a 'flat spot' around the normal mark and will not move until something is very wrong, often once it is too late. The TM4 has the sensitivity required to display every temperature change as it occurs and in an emergency will alert you before your existing dash gauge has even moved.
 
• TM4 Single Sensor comes standard with the option to turn your existing dashboard oil light, into an 'Audible Warning Light'
  If this optional wire is tagged to the engine's Oil Light Sender new messages will display on the screen. The new messages are: 'Engine Delay', this gives you time to start the engine before the audible oil alarm activates. 'Low Oil', this message and the alarm buzzer will activate instantly if low oil pressure is detected while you are driving. (Not suitable for oil gauge sensors. If you want this feature and only have an oil gauge, you will need to fit an inexpensive car type Oil Light Sender).
 

• You can program the TM4's alarm sensitivity to suit your engine
  With a TM4 Single Sensor you don't even need to know your engine's temperature specifications to set the overheating alarm. You simply note the highest temperature your engine reaches during normal driving or interrogate the TM4  memory and then set the audible alarm to go off at a few degrees higher by pressing the button on the front. You get to set the alarm sensitivity and it's no harder than setting an alarm clock. If the alarm goes off while the engine is working hard, you can simply press the front button to stop the alarm, or give it another press to increase the alarm temperature.
 
• The TM4 Single Sensor is very easy to fit
  TM4's can be fitted by any home handyman. The main unit fits under the dash (Compact size - 80 x 30 x 60mm, plus mounting tabs). The 'Easy Fit' temperature sensor takes a few seconds to bolt to the engine. The power just plugs into the cigarette lighter socket or it can be hard wired to your vehicle's electrical system. TM4 suits 12 or 24 volt systems.
  For pictures and more installation details go to: TM4 Installation Page
 
• The TM4's sensor cannot cause coolant leaks or void the engine's warranty
  The TM4 Single Sensor is perfectly safe to fit because it does not require you to break into the cooling system in any way.