diff --git a/Dockerfile b/Dockerfile
index 8db2d07..a0dd958 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,5 +25,5 @@ RUN /usr/bin/crontab /etc/cron.d/fan-control
 ENV IDRAC_HOST local
 #ENV IDRAC_USER root
 #ENV IDRAC_PW calvin
-ENV FANSPEED 0x05
+ENV FAN_SPEED 5
 CMD /startup.sh && cron && tail -f /var/log/cron.log
diff --git a/README.md b/README.md
index 332f7d7..c915a32 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,9 @@
 
 To use, 
 
-`docker run -e IDRAC_HOST=<host ip> -e IDRAC_USER=<username> -e IDRAC_PW=<password> -e FANSPEED=<hex fan speed> alombardo4/idrac-fan-control:latest`
+`docker run -e IDRAC_HOST=<host ip> -e IDRAC_USER=<username> -e IDRAC_PW=<password> -e FAN_SPEED=<dec or hex fan speed> alombardo4/idrac-fan-control:latest`
 
-`FANSPEED` should be set as a hex value, e.g. `0x05`
+`FAN_SPEED` can be set as a decimal or hexadecimal value (0x00 to 0x64). Default value is 5 (%).
 
 `docker-compose.yml` examples:
 
@@ -19,7 +19,7 @@ services:
     restart: unless-stopped
     environment:
       - IDRAC_HOST=local # can be omitted as it is the default value
-      - FANSPEED=0x05 # set to the hex value you want to set the fans to (from 0 to 100%)
+      - FAN_SPEED=0x05 # set to the decimal or hexadecimal value you want to set the fans to (from 0 to 100%)
     devices:
       - /dev/ipmi0:/dev/ipmi0
 ```
@@ -37,5 +37,5 @@ services:
       - IDRAC_HOST=192.168.1.100 # override to the IP of your IDRAC
       - IDRAC_USER=root # set to your IPMI username
       - IDRAC_PW=calvin # set to your IPMI password
-      - FANSPEED=0x05 # set to the hex value you want to set the fans to (from 0 to 100%)
+      - FAN_SPEED=0x05 # set to the decimal or hexadecimal value you want to set the fans to (from 0 to 100%)
 ```
diff --git a/check-temp.sh b/check-temp.sh
index 4dde47d..f32d4bf 100755
--- a/check-temp.sh
+++ b/check-temp.sh
@@ -3,7 +3,8 @@
 IPMIHOST=`cat /host.txt`
 IPMIUSER=`cat /user.txt`
 IPMIPW=`cat /pw.txt`
-FANSPEED=`cat /fanspeed.txt`
+DECIMAL_FAN_SPEED=`cat /decimal_fan_speed.txt`
+HEXADECIMAL_FAN_SPEED=`cat /hexadecimal_fan_speed.txt`
 
 MAXTEMP=32
 
@@ -24,5 +25,5 @@ then
 else
   echo "Temp is OK. Using manual fan control"
   ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x00
-  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x02 0xff $FANSPEED
+  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x02 0xff $HEXADECIMAL_FAN_SPEED
 fi
diff --git a/startup.sh b/startup.sh
index 4a45965..91aebaf 100644
--- a/startup.sh
+++ b/startup.sh
@@ -3,7 +3,18 @@
 echo $IDRAC_HOST >> /host.txt
 echo $IDRAC_USER >> /user.txt
 echo $IDRAC_PW >> /pw.txt
-echo $FANSPEED >> /fanspeed.txt
+
+if [[ $FAN_SPEED == 0x* ]]
+then
+  DECIMAL_FAN_SPEED=$(printf '%d' $FAN_SPEED)
+  HEXADECIMAL_FAN_SPEED=$FAN_SPEED
+else
+  DECIMAL_FAN_SPEED=$FAN_SPEED
+  HEXADECIMAL_FAN_SPEED=$(printf '0x%02x' $FAN_SPEED)
+fi
+
+echo $DECIMAL_FAN_SPEED >> /decimal_fan_speed.txt
+echo $HEXADECIMAL_FAN_SPEED >> /hexadecimal_fan_speed.txt
 
 echo "Host: `cat /host.txt`"
 if [[ $IDRAC_HOST != "local" ]]
@@ -11,4 +22,4 @@ then
   echo "User: `cat /user.txt`"
   echo "PW: `cat /pw.txt`"
 fi
-echo "Fan speed `cat /fanspeed.txt`"
+echo "Fan speed objective: `cat /decimal_fan_speed.txt`%"