Tired of having to replace RPM pills every time you want to change the activation RPM of your nitrous kit? How About needing two RPM activated window switches to control your 2 stages of nitrous? Well, your worries and woes are over.

Nitrous Oxide Systems is proud to present our 2 Stage Wide Open Throttle/ RPM activated Window Switch with Shift Light Control. The WOT/RPM activated window switch is a small, compact, user friendly unit with features like, 2 fully programmable independent RPM window switches that can operate from 0 to 20,000 RPM for anything from a low rpm engine to a high revving sport bike. It has the capability to read a rising or falling throttle position sensor for accurate activations every time. The WOT/RPM activated window switch also features a programmable output to activate a shift light for on–time gear pounding shifts and a handy recall feature that shows max RPM and TPS voltage for easy set–up. Also comes in the 02121NOS, 05134NOS, and 05135NOS kits.

Window switches have just been taken to the next level !!!


•Small, compact, user friendly unit with bright easy to read display
•2 Fully programmable RPM window switches for easy adjustments without the need for RPM pills
•Window switch off and on RPM can be programmed from 0 to 9,999 RPM in 1 RPM increments for precise control (Reading is x10 for applications over 9,999 RPM)
•Works with any 4-cycle engine from 1 to 12 Cylinders
•RPM input can be connected to a DIS coil “driver” wire or a tachometer output circuit
•Will read from 0 to 20,000 RPM for use on a low RPM engine to high revving sport bikes
•Can read a rising or falling TPS signal for a wide range of applications and precise activations
•TPS trigger voltage is adjustable from 0 to 5.0 volts in 1 tenth increment.
•Perfect for a Drive-By-Wire vehicle that has no throttle cable to mount a traditional activation switch
•Window switches work independent of TPS so the window switch is at home just as much on a carbureted vehicle as it is on a EFI car
•Shift light control is adjustable from 0 to 9,999 RPM for on-time gear pounding shifts every time
•Live RPM and TPS readings are displayed on the bright, easy-to-see display
•Handy recall feature allows the max RPM and TPS voltage to be viewed after a run
•Bright colored LED’s light up when stages are active for easy verification of activation
•Replaces P/N 15879NOS RPM Switch
•Included in popular NOS Drive-By-Wire nitrous kits
•Can also be used to activate other accessories, not just nitrous
•Priced attractively as compared to traditional switches