diff --git a/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_lower.l b/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_lower.l
new file mode 100755
index 00000000000..e3efe685184
--- /dev/null
+++ b/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_lower.l
@@ -0,0 +1,9 @@
+#!/usr/bin/env roseus
+
+(ros::roseus "speak_volume_lower")
+(ros::set-dynamic-reconfigure-param "/audible_warning" "volume" :double 0.2)
+(ros::set-dynamic-reconfigure-param "/tweet_client_tablet" "volume" :double 0.2)
+(ros::set-dynamic-reconfigure-param "/tweet_client_uptime" "volume" :double 0.2)
+(ros::set-dynamic-reconfigure-param "/tweet_client_warning" "volume" :double 0.2)
+(ros::set-dynamic-reconfigure-param "/tweet_client_worktime" "volume" :double 0.2)
+(exit)
diff --git a/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_reset.l b/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_reset.l
new file mode 100755
index 00000000000..89685bfb3b8
--- /dev/null
+++ b/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_reset.l
@@ -0,0 +1,9 @@
+#!/usr/bin/env roseus
+
+(ros::roseus "speak_volume_reset")
+(ros::set-dynamic-reconfigure-param "/audible_warning" "volume" :double 1.0)
+(ros::set-dynamic-reconfigure-param "/tweet_client_tablet" "volume" :double 1.0)
+(ros::set-dynamic-reconfigure-param "/tweet_client_uptime" "volume" :double 1.0)
+(ros::set-dynamic-reconfigure-param "/tweet_client_warning" "volume" :double 1.0)
+(ros::set-dynamic-reconfigure-param "/tweet_client_worktime" "volume" :double 1.0)
+(exit)
diff --git a/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_zero.l b/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_zero.l
new file mode 100755
index 00000000000..6f89b269031
--- /dev/null
+++ b/jsk_pr2_robot/jsk_pr2_startup/jsk_pr2_warning/pr2_speak_volume_zero.l
@@ -0,0 +1,9 @@
+#!/usr/bin/env roseus
+
+(ros::roseus "speak_volume_zero")
+(ros::set-dynamic-reconfigure-param "/audible_warning" "volume" :double 0.0)
+(ros::set-dynamic-reconfigure-param "/tweet_client_tablet" "volume" :double 0.0)
+(ros::set-dynamic-reconfigure-param "/tweet_client_uptime" "volume" :double 0.0)
+(ros::set-dynamic-reconfigure-param "/tweet_client_warning" "volume" :double 0.0)
+(ros::set-dynamic-reconfigure-param "/tweet_client_worktime" "volume" :double 0.0)
+(exit)