diff --git a/README.md b/README.md
index e4558a3..3e7943b 100644
--- a/README.md
+++ b/README.md
@@ -96,10 +96,10 @@ formatted as line-delimited JSON.
 |----------------------------------|-------------------------------------------------------------------------------|
 | `report`                         | Show current input                                                            |
 | `pwm`                            | Show current PWM settings                                                     |
-| `pwm <0/1> max_i_pos <amp>`      | Set maximum positive output current                                           |
-| `pwm <0/1> max_i_neg <amp>`      | Set maximum negative output current                                           |
-| `pwm <0/1> max_v <volt>`         | Set maximum output voltage                                                    |
-| `pwm <0/1> i_set <amp>`          | Disengage PID, set fixed output current                                       |
+| `pwm <0/1> max_i_pos <amp>`      | Set maximum positive output current, clamped to [0, 2]                        |
+| `pwm <0/1> max_i_neg <amp>`      | Set maximum negative output current, clamped to [0, 2]                        |
+| `pwm <0/1> max_v <volt>`         | Set maximum output voltage, clamped to [0, 4]                                 |
+| `pwm <0/1> i_set <amp>`          | Disengage PID, set fixed output current, clamped to [-2, 2]                   |
 | `pwm <0/1> pid`                  | Let output current to be controlled by the PID                                |
 | `center <0/1> <volt>`            | Set the MAX1968 0A-centerpoint to the specified fixed voltage                 |
 | `center <0/1> vref`              | Set the MAX1968 0A-centerpoint to measure from VREF                           |