diff --git a/install.sh b/install.sh
index 3b7e98d..566b75b 100755
--- a/install.sh
+++ b/install.sh
@@ -17,6 +17,20 @@ BLUE='\033[1;34m'
 GREEN='\033[0;32m'
 SET='\033[0m'
 
+# Global Varibales
+POWERUP_REQ=1
+POWERUP_NOT_REQ=0
+
+STATUS_GPRS=19
+STATUS_CELL_IOT_APP=20
+STATUS_CELL_IOT=23
+STATUS_TRACKER=23
+
+POWERKEY_GPRS=26
+POWERKEY_CELL_IOT_APP=11
+POWERKEY_CELL_IOT=24
+POWERKEY_TRACKER=24
+
 
 function colored_echo
 {
@@ -197,32 +211,52 @@ do
 			  
 				wget --no-check-certificate  $SCRIPT_PATH/reconnect_gprsshield -O $RECONNECT_SCRIPT_NAME
 				if [[ $? -ne 0 ]]; then colored_echo "Download failed" ${RED}; exit 1; fi
+
+				sed -i "s/STATUS_PIN/$STATUS_GPRS/" configure_modem.sh
+				sed -i "s/POWERKEY_PIN/$POWERKEY_GPRS/" configure_modem.sh
+				sed -i "s/POWERUP_FLAG/$POWERUP_REQ/" configure_modem.sh
 			  
 			elif [ $shield_hat -eq 2 ]; then 
 			  
 				wget --no-check-certificate   $SCRIPT_PATH/reconnect_baseshield -O $RECONNECT_SCRIPT_NAME
 				if [[ $? -ne 0 ]]; then colored_echo "Download failed" ${RED}; exit 1; fi
+
+				sed -i "s/POWERUP_FLAG/$POWERUP_NOT_REQ/" configure_modem.sh
 				
 			elif [ $shield_hat -eq 3 ]; then 
 			  
 				wget --no-check-certificate   $SCRIPT_PATH/reconnect_cellulariot_app -O $RECONNECT_SCRIPT_NAME
 				if [[ $? -ne 0 ]]; then colored_echo "Download failed" ${RED}; exit 1; fi
+
+				sed -i "s/STATUS_PIN/$STATUS_CELL_IOT_APP/" configure_modem.sh
+				sed -i "s/POWERKEY_PIN/$POWERKEY_CELL_IOT_APP/" configure_modem.sh
+				sed -i "s/POWERUP_FLAG/$POWERUP_REQ/" configure_modem.sh
 			  
 			elif [ $shield_hat -eq 4 ]; then 
 			  
 				wget --no-check-certificate   $SCRIPT_PATH/reconnect_cellulariot -O $RECONNECT_SCRIPT_NAME
 				if [[ $? -ne 0 ]]; then colored_echo "Download failed" ${RED}; exit 1; fi
+
+				sed -i "s/STATUS_PIN/$STATUS_CELL_IOT/" configure_modem.sh
+				sed -i "s/POWERKEY_PIN/$POWERKEY_CELL_IOT/" configure_modem.sh
+				sed -i "s/POWERUP_FLAG/$POWERUP_REQ/" configure_modem.sh
 			
 			elif [ $shield_hat -eq 5 ]; then 
 			  
 				wget --no-check-certificate   $SCRIPT_PATH/reconnect_tracker -O $RECONNECT_SCRIPT_NAME
 				if [[ $? -ne 0 ]]; then colored_echo "Download failed" ${RED}; exit 1; fi
 
+				sed -i "s/STATUS_PIN/$STATUS_TRACKER/" configure_modem.sh
+				sed -i "s/POWERKEY_PIN/$POWERKEY_TRACKER/" configure_modem.sh
+				sed -i "s/POWERUP_FLAG/$POWERUP_REQ/" configure_modem.sh
+
 			elif [ $shield_hat -eq 6 ]; then 
 			  
 				wget --no-check-certificate   $SCRIPT_PATH/reconnect_basehat -O $RECONNECT_SCRIPT_NAME
 				if [[ $? -ne 0 ]]; then colored_echo "Download failed" ${RED}; exit 1; fi
 
+				sed -i "s/POWERUP_FLAG/$POWERUP_NOT_REQ/" configure_modem.sh
+
 			fi
 			  
 			  mv functions.sh $PPP_PATH
diff --git a/src/configure_modem.sh b/src/configure_modem.sh
index 2196842..bc72afd 100644
--- a/src/configure_modem.sh
+++ b/src/configure_modem.sh
@@ -2,6 +2,46 @@
 
 source functions.sh
 
+# default pins set for cellulariot hat 
+STATUS=${STATUS_PIN:-23}
+POWERKEY=${POWERKEY_PIN:-24}
+POWER_UP_REQUIRED=${POWERUP_FLAG:-1}
+
+# 1 : STATUS
+# 2 : POWERKEY 
+function power_up_module
+{
+    # Configure pins
+    gpio -g mode $STATUS in
+    gpio -g mode $POWERKEY out
+
+	for i in {1..20}; do
+		if [[ $(gpio -g read $STATUS) -eq 1 ]]; then
+			debug "Module is powering up..."
+
+			gpio -g write $POWERKEY 0
+			gpio -g write $POWERKEY 1
+			sleep 2
+			gpio -g write $POWERKEY 0
+			sleep 2
+
+			if [[ $(gpio -g read $STATUS) -eq 0 ]]; then
+				debug "Module is powered up."
+				return 0
+				break
+			else
+				debug "Module couldn't be powered up!"
+				sleep 2
+            fi
+		else
+			debug "Module is just powered up."
+			return 0
+			break
+		fi
+	done
+	return 1 
+}
+
 # Check the vendor
 lsusb | grep Quectel >> /dev/null
 IS_QUECTEL=$?
@@ -10,6 +50,12 @@ lsusb | grep Telit >> /dev/null
 IS_TELIT=$?
 
 
+if [[ $POWER_UP_REQUIRED -eq 1 ]]; then
+    if power_up_module -eq 0 ; then sleep 0.1; else debug "Module couldn't be powered up! Check the hardware setup!"; fi
+else 
+    debug "Power up is not required."
+fi
+
 ### Modem configuration for RMNET/PPP mode ##################################
 debug "Checking APN and Modem Mode..."
 
diff --git a/src/reconnect_scripts/reconnect_cellulariot b/src/reconnect_scripts/reconnect_cellulariot
index 52c9789..300d4ff 100644
--- a/src/reconnect_scripts/reconnect_cellulariot
+++ b/src/reconnect_scripts/reconnect_cellulariot
@@ -32,6 +32,7 @@ function power_up_module()
 			else
 				debug "Module couldn't be powered up!"
 				sleep 2
+			fi
 		else
 			debug "Module is just powered up."
 			return 0
diff --git a/src/reconnect_scripts/reconnect_cellulariot_app b/src/reconnect_scripts/reconnect_cellulariot_app
index 69c4d6a..f2391f5 100644
--- a/src/reconnect_scripts/reconnect_cellulariot_app
+++ b/src/reconnect_scripts/reconnect_cellulariot_app
@@ -33,6 +33,7 @@ function power_up_module()
 			else
 				debug "Module couldn't be powered up!"
 				sleep 2
+			fi
 		else
 			debug "Module is just powered up."
 			return 0
diff --git a/src/reconnect_scripts/reconnect_gprsshield b/src/reconnect_scripts/reconnect_gprsshield
index 926d44a..ca12a04 100644
--- a/src/reconnect_scripts/reconnect_gprsshield
+++ b/src/reconnect_scripts/reconnect_gprsshield
@@ -33,6 +33,7 @@ function power_up_module()
 			else
 				debug "Module couldn't be powered up!"
 				sleep 2
+			fi
 		else
 			debug "Module is just powered up."
 			return 0
diff --git a/src/reconnect_scripts/reconnect_tracker b/src/reconnect_scripts/reconnect_tracker
index 33b8e32..cb78212 100644
--- a/src/reconnect_scripts/reconnect_tracker
+++ b/src/reconnect_scripts/reconnect_tracker
@@ -33,6 +33,7 @@ function power_up_module()
 			else
 				debug "Module couldn't be powered up!"
 				sleep 2
+			fi
 		else
 			debug "Module is just powered up."
 			return 0