diff --git a/Sonoff-Dual-and-Dual-R2.md b/Sonoff-Dual-and-Dual-R2.md
index 602402f2..6b9e1ce8 100644
--- a/Sonoff-Dual-and-Dual-R2.md
+++ b/Sonoff-Dual-and-Dual-R2.md
@@ -76,4 +76,6 @@ To assist easy installation serial logging is enabled by default in user_config.
 
 Execute command ```seriallog 0``` once to turn all communication on the serial port off.
 
-If within 10 minutes no input is received serial communication is turned off too. 
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+If within 10 minutes no input is received serial communication is turned off too.
+
+Another reason for intermittent switch errors can be Power Saving. Make sure it is disabled by executing the command ```seriallog 0```
\ No newline at end of file