diff --git a/Modules.md b/Modules.md
index 45630275..4fe6c216 100644
--- a/Modules.md
+++ b/Modules.md
@@ -2,6 +2,8 @@
 
 > New Modules are added to Tasmota only if a device requires additional code for new functions. Use [Templates](Templates) first to configure your device if it's not in the module list.
 
+**Serial logging** is disabled by the Tasmota code for several modules and components (e.g., Sonoff POW, Sonoff S31, Sonoff Dual (v1), Tuya dimmers, PZEM components, etc.). Serial communication is used by these device to transfer the data from the MCU chip to the ESP chip. Do not enable serial logging ([SerialLog 0](Commands#seriallog)) on these devices. It can cause the device software to crash.
+
 **Configure Module** page in the WebUI is used to configure your device as one of the modules **and** to [configure additional components](components) connected to one of the free GPIO pins of the device.
 > Use Generic module (`Module 18`) to have almost all GPIO pins available.