diff --git a/hardware/arduino/zunoG2/cores/ZWSupport/ZWSupport.c b/hardware/arduino/zunoG2/cores/ZWSupport/ZWSupport.c
index 230606ef..3c0a032e 100644
--- a/hardware/arduino/zunoG2/cores/ZWSupport/ZWSupport.c
+++ b/hardware/arduino/zunoG2/cores/ZWSupport/ZWSupport.c
@@ -53,6 +53,13 @@ static const uint8_t FREQ_TBL_CONV[][2] = { {ZME_FREQ_EU, REGION_EU},
 											{ZME_FREQ_IL, REGION_IL},
                       						{ZME_FREQ_MY, REGION_KR},
                       						{ZME_FREQ_LR_US, REGION_US_LR}};
+
+bool zuno_IsLr(void) {
+	if (g_zuno_sys->node_id >= 0x100)
+		return (true);
+	return (false);
+}
+
 // -----------------------------------------------------------------
 // STATIC NIF
 // -----------------------------------------------------------------
diff --git a/hardware/arduino/zunoG2/cores/includes/Arduino.h b/hardware/arduino/zunoG2/cores/includes/Arduino.h
index b08759ff..eeae8a63 100644
--- a/hardware/arduino/zunoG2/cores/includes/Arduino.h
+++ b/hardware/arduino/zunoG2/cores/includes/Arduino.h
@@ -33,6 +33,8 @@ enum{
   ZUNO_SECUREPARAM_UNDEFINED = 0xFF,
 };
 
+bool zuno_IsLr(void);
+
 // Configurator 
 #define zunoChangeDefine(type, v)  type v, _##v
 #define zunoChangeInit(v, i) v = i; _##v = v + 1