diff --git a/Peripherals.md b/Peripherals.md
index 2eaeb609..30ad2e90 100644
--- a/Peripherals.md
+++ b/Peripherals.md
@@ -27,6 +27,7 @@ More about [general configuration](Sensor-Configuration).
 - [**HC-SR04 (SR04+, SR04T)**](Wemos-D1-Mini-and-HC-SR04-Ultrasonic-Sensor) - Ultrasonic Sensor
 - [**HC-SR501**](PIR-Motion-Sensors#HC-SR501) - PIR Motion Sensor<img src="https://user-images.githubusercontent.com/5904370/53279530-8c571600-3711-11e9-85c0-27d35be2df48.png" width="200" align="right" />
 - **Honeywell HIH** - Temperature and Humidity sensor (I<sup>2</sup>C)
+- **Honeywell HPMA115S0** - Particulate Matter Sensor (serial)
 - **HTU21** - Temperature and Humidity sensor (I<sup>2</sup>C)
 - **HX711** - Load Cell sensor (single wire)
 - **INA219** - High-Side DC Current and Voltage sensor (I<sup>2</sup>C)