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The RGT SL45 is a sequential shift light system which includes a LED digital display tachometer. The SL45 is easily mounted on your dashboard to give you a visual indication of the optimum point at which to change gear whilst racing. No need for manual wiring just plug it to your OBD2 connector and power it with the USB adapter!

Unlike conventional shift lights, which require you to rev your engine in order to program the point at which you want the light to come on, the SL45 can be set up at idle. The built in display enables you to program the shift point more accurately than just using your rev counter.


SL45 also includes monitoring of coolant temperature and vehicle speed (if originally equipped with related sensors).  If coolant goes beyond user specified limit, a dedicated led flashing patterm will occur, which will instantly inform the driver.


At the touch of a button, can easily configure and memorize shift point, number of cylinders, LED brightness, LED scrolling mode, coolant temperature alarm values. Button is also used to switch between display modes: rpm, coolant temperature and vehicle speed.

OBD2 Shift light and coolant gauge and alarm + speedometer SL45

SKU: 006
  • Power requirement 5V with USB adapter
    Power consumption max 0.4A at 5V dc (all lights lit)
    Accuracy within 10 RPM
    Number of cylinders 1, 2, 3, 4, 5, 6, 8, 10 & 12
    Operating temperature 0°C – 50°C (32°F - 122°F)
    RPM range 100 – 15,000
    Size (W x H x D) 84mm x 29mm x 18mm
    Weight 40 grams (excluding cable)
    Memory lifetime Approximately 40 years
    Shift point is user programmable.

    Coolant temperature alarm thresholds is user programmable.
    LED brightness is user programmable
    2 LED scrolling modes.

    4 display modes.
    LED Specifications.
    Red shift led 21 000 mcd
    Red leds 16 000 mcd
    Amber leds 12 000 mcd
    Blue led 12 000 mcd

SL10/SL15 user manual

OBD2 SL35 user manual

OBD2 SL45 user manual

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