100TECH Signal Selectable Fuel Gauge

Got two of these (black on and a white one). Used it with a sending unit to monitor the water level in my camper's water tank. Works great, instructions were easy to follow. Online tutorial videos can be found to make life easier. Only complaint is that is almost no lip/flange around the edge of the gauge which means the hole you make has to be exactly right, there is no wiggle room at all. Other than that, it's a good product.

I bought this for my Diesel Tractor fuel tank to match the sender I bought. Works great with the correct sender. Weatherproof. Looks good.

Works great in my Sprinter to read both the fresh water tank and grey water tank. The reading on each tank is selectable through a single 3 position rocker switch ON>OFF>ON to power the gauge and select each tank signal. Some people stated they had problems understanding the programming since there are not instructions, so here they are:PROGRAMMING INSTRUCTIONS1) Put the gauge in programming mode by pressing the black button on the back and hold it for 3 sec, or until the backlight flashes, then release.2) Immediately press the button again to cycle through each of the available calibration options. Each push of the button moves the needle on the gauge from Empty to Full to indicate which range is selected. This programs the gauge to match the type of sensor you are using.NeedlePosition E - - - - - FE 0 ~ 190 ohms1/4 0 ~ 180 ohms1/2 10 ~ 180 ohms3/4 240 ~ 33 ohms (The default setting from the factory is: 240 ~ 33 ohms.)F 240 ~ 30 ohms3) Once the desired range is selected (by advancing the needle to one of the above ranges with each press), leave it alone and the gauge will timeout and go back into Operational mode.4) In Operational mode each press of the button cycles through the selection of backlight colors available.

Just what the doctor ordered. Easy to wire up (4 wires, ignition, signal, ground, illumination), fit the 2” hole perfectly and the weather seal is intact so no moisture should be able to infiltrate into the gauge pod. Programmed out of the box for 240-33 so no need to fiddle with changing the settings so I can not confirm if it works for other settings. Tank was empty on my Scat Trak skid steer and the gauge showed empty like it should. (Measured signal was 236ohm) filled with 4.5 gallons of diesel which is exactly a quarter tank and gauge registered 1/4 like it should. Put in another 4.5 gallons, what do you know it shows 1/2 tank. The gauge is well worthy the money to not have to worry about running out of fuel in the middle of a job and dealing with purging air out of the lines. Backlight was also a nice touch and easy to cycle to the desired color. Gauge has been totally steady even in the bounciest conditions and on uneven terrain. Will update about the longevity

This unit was easy to install and does the job great, (be careful of the wiring colorsBlack is the sender wire and the blue is the ground, this is reversed to most units

unlike the gauges that proliferated the market years ago, with ungainly wires, this as a single "press in" connection that contains all of the wires - incredibly easy to install, very low power draw, and with a very professional appearance. It allows the user to configure for different sending units, and different backlight colors. Most highly recommended. I replaced all gauges in my boat with these.

Good product. Good quality

I purchased this gauge in December but didn’t get around to installing it until early summer. It initially worked during a quick test, but when I went to install it, the needle was stuck and would no longer return to empty when power was removed. The sender unit was working perfectly and within spec (240–33 ohm range), so the issue was clearly with the gauge itself.This failure happened before the unit was ever mounted or exposed to use — which points to a manufacturing defect. Unfortunately, Amazon says the return window closed in early February, leaving me with a brand-new but useless product.Very disappointed in the quality and reliability. I’ve since replaced it with a higher-quality KUS gauge and won’t be purchasing from this brand again.