diff --git a/avr/devices/n21/main/main.asm b/avr/devices/n21/main/main.asm
index c9c0c62..a2e0325 100644
--- a/avr/devices/n21/main/main.asm
+++ b/avr/devices/n21/main/main.asm
@@ -97,6 +97,8 @@
 
 ;.equ VALUE_ID_REED_CONF    = 0x81
 
+.equ VALUE_ID_LEDSIMPLE_TIMING = 0x88
+
 
 
 ; ***************************************************************************