diff --git a/Variant-PWM.md b/Variant-PWM.md
index 78c514a..1943cda 100644
--- a/Variant-PWM.md
+++ b/Variant-PWM.md
@@ -2,6 +2,7 @@ This variant can be used with Pulse Width Modulation RC Receivers.
It expects 1ms to 2ms pulses at 50Hz from 2 channels.
## :gear: Configuration/Parameters
+Voltage [Control Mode](https://github.com/EFeru/hoverboard-firmware-hack-FOC#foc-firmware) is used by default.
CONTROL_PWM_RIGHT is for the right sensor cable and is set by default to limit the noise as this cable is shorter.
You can use CONTROL_PWM_LEFT instead if you need to use the left sensor cable.
DEBUG_SERIAL will be automatically enabled on the opposite cable.