diff --git a/4410-4412.tex b/4410-4412.tex
index 821e963..63f8c95 100644
--- a/4410-4412.tex
+++ b/4410-4412.tex
@@ -796,6 +796,12 @@ The measured RMS voltage divided by the full scale ideal RMS voltage (i.e. $V_\m
     \caption{Attenuator step from 31 to 32 digital\\(major carry glitch)\repeatfootnote{sinara354}}
 \end{figure}
 
+\section{Front panel LEDs}
+
+    4410/4412 Urukul features a number of indicator LEDs in the front panel. Each of four channel SMA connectors is accompanied by a green LED, used to indicate that RF output is enabled, and a red LED, which activates to indicate a DDS synchronization/PLL issue. Note that when bypassing PLL in ARTIQ gateware (see below) LED may stay on.
+
+    Two additional LEDs indicate power good (green) and overtemperature (red). 
+
 \newpage
 
 \section{Configuring Operation Mode}