README: Document units in clamped PWM value

README.md

@@ -96,10 +96,10 @@ formatted as line-delimited JSON.
 |------------------------------------------- |-------------------------------------------------------------------------------|
 | `report`                                   | Show latest report of channel parameters (see *Reports* section)              |
 | `pwm`                                      | Show current PWM settings                                                     |
-| `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> max_i_pos <amp>`                | Set maximum positive output current in Amperes, clamped to [0 A, 2 A]         |
+| `pwm <0/1> max_i_neg <amp>`                | Set maximum negative output current in Amperes, clamped to [0 A, 2 A]         |
+| `pwm <0/1> max_v <volt>`                   | Set maximum output voltage in Volts, clamped to [0 V, 4 V]                    |
+| `pwm <0/1> i_set <amp>`                    | Disengage PID, set fixed output current in Amperes, clamped to [-2 A, 2 A]    |
 | `pwm <0/1> polarity <normal/reversed>`     | Set output current polarity, with 'normal' being the front panel polarity     |
 | `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                 |