Engine Saver

Have seen a few posts on this forum about the "Engine Saver" and so bit the bullet and bought one.
Just finished putting the it on my 80 series cruiser today and I have to say I'm impressed with it. I went for the new dual (temperature and low water) alarm model. cost $249
Took me about 4 hours work (trying to find the ignition wire behind the dash is a nightmare on the cruiser).
You get an adapter that fits in the top radiator hose with a low water sensor and a temperature sensor that you just bolt to the head.
I have been worried for some time with the lack of indication on the temp gauge ( doesn't alter when pulling hard and yet you can smell and feel the extra heat in the motor). This unit is quite sensitive and on the road test I did after fitting it, when you pull up a small hill the alarm sounds showing the increase in Temp. It has manual adjustment so you can set it to a higher temp and the low water alarm is brilliant.

Fortunately I have never run a motor out of water but I reckon I now have more chance of avoiding it if it ever happens.

Does anyone have any feedback on these units that I should be aware of.