diff --git a/Protocols_Details.md b/Protocols_Details.md
index 2c3fd8b..65924cb 100644
--- a/Protocols_Details.md
+++ b/Protocols_Details.md
@@ -5,6 +5,8 @@ Legend:
 - Extended limits supported: -125%..+125% can be used and will be transmitted. Otherwise the default is -100%..+100% only.
 - Autobind protocol: you do not need to press the bind button at power up to bind, this is done automatically.
 
+The AETR mentionned here for all protocols depends on the TX settings compilation option set in _Config.h.
+
 ***
 #A7105 RF Module
 
@@ -93,7 +95,19 @@ Extended limits supported
 
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 ---|---|---|---|---|---|---|---
-CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
+A|E|T|R|CH5|CH6|CH7|CH8
+
+Bind procedure:
+- With the TX off, put the binding plug in and power on the RX (RX LED slow blink), then power it down and remove the binding plug. Receiver should now be in autobind mode.
+- Turn on the TX, set protocol = Devo with option=0, turn off the TX (TX is now in autobind mode).
+- Tun on RX (RX LED fast blink).
+- Turn on TX (RX LED solid, TX LED fast blink).
+- Wait for bind on the TX to complete (TX LED solid).
+- Make sure to set the RX_Num value for model match.
+- Change option to 1 to use the global ID.
+- Do not touch option/RX_Num anymore.
+
+Note that the ouput on the RX will be EATR.
 
 ##DSM2
 Extended limits supported
@@ -123,6 +137,8 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
 ---|---|---|---|---|---|---|---|---|----|----|----
 A|E|T|R|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
 
+Note that the ouput on the RX will be TAER.
+
 ###Sub_protocol DSMX
 Same as above