diff --git a/README.md b/README.md
index 29b65d2..586302e 100644
--- a/README.md
+++ b/README.md
@@ -1,15 +1,19 @@
 # CPDCTRL
-A interactive command-line utility for measuring CPD (contact potential difference).
+A python library and interactive command-line utility for measuring CPD (contact potential difference).
 
-To run it, launch **Powershell**, activate the python virtual environment and then run the script with `ipython`
+To run the interactive utility, launch **Powershell**, activate the python virtual environment and then run the script with `ipython`
 ```ps1
 cd cpdctrl
 .\venv\Scripts\Activate.ps1
 ipython -i .\cpdctrl\cpdctrl\cpdctrl-interactive.py
 ```
 
-## Devices
-Currently requires 
-- *Keithley 2700 SMU* for measuring the voltage (CPD)
-- *Arduino Nano* connected to a *Thorlabs LEDD1B* for controlling the light source (LED)
+In the ipython shell, run `help()` to get a list of available functions and help topics.
 
+## Devices
+Voltage Measurement:
+- **Keithley 2700 SMU** for measuring the voltage (CPD)
+
+Led Controller:
+- **Arduino Nano** connected to a **Thorlabs LEDD1B** for controlling the light source (LED)
+- **Thorlabs DC2200**