diff --git a/README.md b/README.md
index 9f91e76..d947a82 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,11 @@ This site is under constant development. The main purpose is educational.
 The webserver is a simple VPS, provisioned with docker-compose.yml.
 
 ## aqi_monitor
-*aqi_monitor.ino* is the arduino script running on the **nodeMCU ESP8266** microcontroller. The microcontroller posts data to the flask backend on a regular interval.
+*aqi_monitor.ino* is the arduino script running on the **nodeMCU ESP8266** microcontroller. The microcontroller posts data to the flask backend on a regular interval. This is a legacy option, not in use any more now due to it's limitations.
+
+## aqi_monitor_py
+Rewritten sensor script in Python, runs on a raspberry pi instead.
+
 Connected to that is:  
 * SDS011: pm2.5 and pm10 sensor from Nova Fitness.
 * BME280: Pressure Humidity Temperature Sensor Module.
diff --git a/aqi_monitor_py/README.md b/aqi_monitor_py/README.md
index 8fa2169..83896b9 100644
--- a/aqi_monitor_py/README.md
+++ b/aqi_monitor_py/README.md
@@ -5,3 +5,9 @@ Updated script running on a RaspberryPi. Pure python implementation.
 ```
 pip install -r requirements.txt
 ```
+
+# Install service
+```bash
+sudo cp aqi_monitor_py/service/sensor.* /etc/systemd/system
+sudo systemctl enable --now sensor.timer
+```