diff --git a/gpio_off.py b/gpio_off.py
new file mode 100644
index 0000000..6a2dbcf
--- /dev/null
+++ b/gpio_off.py
@@ -0,0 +1,5 @@
+#!/usr/bin/env python
+
+if __name__ == "__main__":
+    pins = list(range(0,40))
+        GPIO.setup(pins, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
diff --git a/lib/init/kiln-controller.service b/lib/init/kiln-controller.service
index 318e4c0..1fc241c 100644
--- a/lib/init/kiln-controller.service
+++ b/lib/init/kiln-controller.service
@@ -3,6 +3,7 @@ Description=kiln-controller
 
 [Service]
 ExecStart=/home/pi/kiln-controller/venv/bin/python /home/pi/kiln-controller/kiln-controller.py
+ExecStopPost=/home/pi/kiln-controller/venv/bin/python /home/pi/kiln-controller/gpio_off.py
 
 [Install]
 WantedBy=multi-user.target