https://www.frsky-rc.com/ps30-adv/
PS30 ADV - FrSky - Lets you set the limits
adv frsky letssetlimits
https://www.frsky-rc.com/product/hall-rpm-adv/
Hall RPM ADV - FrSky - Lets you set the limits
The X7S ACCESS features 24 channels with a faster baud rate and lower latency thanks to its high-speed module digital interface.
hall rpm advfrsky letsset
https://www.frsky-rc.com/ass-100-adv/
PAS100 ADV (ASS100 ADV) - FrSky - Lets you set the limits
frsky letsadvsetlimits
https://www.frsky-rc.com/frsky-hall-rpm-adv-sensor/
FrSky Hall RPM ADV Sensor - FrSky - Lets you set the limits
hall rpm advsensor letsfrsky