diff --git a/core/dev/button-sensor.h b/core/dev/button-sensor.h
index b05d80db9..34a51d7d5 100644
--- a/core/dev/button-sensor.h
+++ b/core/dev/button-sensor.h
@@ -35,6 +35,7 @@
 #include "lib/sensors.h"
 
 extern const struct sensors_sensor button_sensor;
+extern const struct sensors_sensor button_sensor2;
 
 #define BUTTON_SENSOR "Button"
 
diff --git a/platform/econotag/Makefile.econotag b/platform/econotag/Makefile.econotag
index 8e6939f9c..409fe5cc2 100644
--- a/platform/econotag/Makefile.econotag
+++ b/platform/econotag/Makefile.econotag
@@ -4,7 +4,7 @@ CONTIKI_TARGET_DIRS = . dev apps net
 CONTIKI_CORE = main
 CONTIKI_TARGET_MAIN = ${CONTIKI_CORE}.o
 
-CONTIKI_TARGET_SOURCEFILES += main.c clock.c button-sensor.c sensors.c slip.c platform_prints.c
+CONTIKI_TARGET_SOURCEFILES += main.c clock.c button-sensor.c button-sensor2.c sensors.c slip.c platform_prints.c
 
 ${warning $(CONTIKI)}
 CONTIKIMC1322X=$(CONTIKI)/cpu/mc1322x
diff --git a/platform/econotag/button-sensor.c b/platform/econotag/button-sensor.c
index f89cd6544..cbd1e0fd8 100644
--- a/platform/econotag/button-sensor.c
+++ b/platform/econotag/button-sensor.c
@@ -68,6 +68,8 @@ configure(int type, int c)
 			if(!status(SENSORS_ACTIVE)) {
 				timer_set(&debouncetimer, 0);
 				enable_irq_kbi(4);
+				kbi_edge(4);
+				enable_ext_wu(4);
 			}
 		} else {
 			disable_irq_kbi(4);
diff --git a/platform/econotag/button-sensor2.c b/platform/econotag/button-sensor2.c
new file mode 100644
index 000000000..6552a94cb
--- /dev/null
+++ b/platform/econotag/button-sensor2.c
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors
+ * to the MC1322x project (http://mc1322x.devl.org) and Contiki.
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki OS.
+ *
+ * $Id: button-sensor.c,v 1.1 2010/06/09 14:46:30 maralvira Exp $
+ */
+
+#include "lib/sensors.h"
+#include "dev/button-sensor.h"
+
+#include "mc1322x.h"
+
+#include <signal.h>
+
+const struct sensors_sensor button_sensor2;
+
+static struct timer debouncetimer;
+static int status(int type);
+
+void kbi5_isr(void) {
+	if(timer_expired(&debouncetimer)) {
+		timer_set(&debouncetimer, CLOCK_SECOND / 4);
+		sensors_changed(&button_sensor2);
+	}
+	clear_kbi_evnt(5);
+}
+
+static int
+value(int type)
+{
+	return GPIO->DATA.GPIO_27 || !timer_expired(&debouncetimer);
+}
+
+static int
+configure(int type, int c)
+{
+	switch (type) {
+	case SENSORS_ACTIVE:
+		if (c) {
+			if(!status(SENSORS_ACTIVE)) {
+				timer_set(&debouncetimer, 0);
+				enable_irq_kbi(5);
+				kbi_edge(5);
+				enable_ext_wu(5);
+			}
+		} else {
+			disable_irq_kbi(5);
+		}
+		return 1;
+	}
+	return 0;
+}
+
+static int
+status(int type)
+{
+	switch (type) {
+	case SENSORS_ACTIVE:
+	case SENSORS_READY:
+		return bit_is_set(*CRM_WU_CNTL, 21); /* check if kbi5 irq is enabled */
+	}
+	return 0;
+}
+
+SENSORS_SENSOR(button_sensor2, BUTTON_SENSOR,
+	       value, configure, status);
diff --git a/platform/econotag/main.c b/platform/econotag/main.c
index 2f8cc27b1..a3218fdb0 100644
--- a/platform/econotag/main.c
+++ b/platform/econotag/main.c
@@ -50,7 +50,9 @@
 /* econotag */
 #include "platform_prints.h"
 
-SENSORS(&button_sensor);
+#ifndef OWN_SENSORS_DEFINITION
+SENSORS(&button_sensor, &button_sensor2);
+#endif
 
 #ifndef M12_CONF_SERIAL
 #define M12_SERIAL 0x000000