resistance calibration

docs/manual.md

@@ -415,22 +415,22 @@ All these components are activated **live without the need to restart the router
 
 ### Resistance Calibration
 
-The router **needs to know the resistance value of the load**. There several ways to set it.
-
-1. **Measure yourself:** You can manually enter the resistance values in the `Hardware Config` page.
-   If you chose to do so, be careful to put a value that you have correctly measured!
-   An approximation will cause the router to not properly work because it won't be able to adjust the exact amount of power to send.
+The router **needs to know the resistance value of the load**.
 
 - `Output 1 Resistance`: the resistance value in Ohm of the load connected to Output 1
 - `Output 2 Resistance`: the resistance value in Ohm of the load connected to Output 2
 
+Be careful to put a value that you have correctly measured!
+An approximation will cause the router to not properly work because it won't be able to adjust the exact amount of power to send.
+
+If you have one of these device attached, they can help you.
+You can set the dimmer in manual mode and set it to 100% and read the resistance value.
+Then you just have to report it in the `Hardware Config` page.
+
 2. **PZEM-004T v3:** If you have wired a PZEM-004T v3 connected to each output, it will measure the resistance value when routing.
-   In this case, **you do not have to enter any value**, leave the fields to 0.
-   The PZEM will measure the resistance value while routing.
 
-3. **JSY-MK-194T:** If you have a JSY-MK-194T, you can manually activate the dimmer one by one to 100% and wait about 5 seconds for the values to stabilize.
+3. **JSY-MK-194T:** If you have a JSY-MK-194T, you can activate the dimmer one by one to 100% and wait for the values to stabilize.
    The router will then display the resistance value in the `Overview` page, thanks to the JSY.
-   You just have to report it in the `Hardware Config` page.
 
 ## Dashboard / Statistics