diff --git a/components/sensor/pmsx003.rst b/components/sensor/pmsx003.rst
index 66827d136..0ecee8b54 100644
--- a/components/sensor/pmsx003.rst
+++ b/components/sensor/pmsx003.rst
@@ -5,7 +5,7 @@ PMSX003 Particulate Matter Sensor
     :description: Instructions for setting up PMSX003 Particulate matter sensors
     :image: pmsx003.svg
 
-The ``pmsx003`` sensor platform allows you to use your PMS5003, PMS7003, ... particulate matter
+The ``pmsx003`` sensor platform allows you to use your Plantower PMS5003, PMS7003, ... laser based particulate matter sensors
 (`datasheet <http://www.aqmd.gov/docs/default-source/aq-spec/resources-page/plantower-pms5003-manual_v2-3.pdf>`__)
 sensors with ESPHome.
 
@@ -21,6 +21,13 @@ value:
 - ``PMS5003T`` for PMS5003T. These support ``pm_1_0``, ``pm_2_5`` and ``pm_10_0``, ``temperature`` and ``humidity``.
 - ``PMS5003ST`` for PMS5003ST. These support ``pm_2_5``, ``temperature``, ``humidity`` and ``formaldehyde``.
 
+Sensor Longevity
+------------------------
+The laser diode inside the PMSX003 has a lifetime of about 8000 hours, nearly one year.
+
+If you wish to use the optional ``update_interval`` ensure you have a ``tx_pin`` set in the UART configuration and connected to the RECEIVE/RX pin
+(may also be called the TX pin, depending on the model) of the PMS. Setting ``update_interval`` to 120 seconds or higher may help extend the life span of the sensor.
+
 .. code-block:: yaml
 
     # Example configuration entry
@@ -38,34 +45,34 @@ value:
           name: "Particulate Matter <2.5µm Concentration"
         pm_10_0:
           name: "Particulate Matter <10.0µm Concentration"
-        update_interval: 60000ms
+        update_interval: 120s
 
 Configuration variables:
 ------------------------
 
-- **pm_1_0_std** (*Optional*): Use the concentration of particulates of size less than 1.0µm in µg per cubic meter at standard particle
+- **pm_1_0_std** (*Optional*): Use the concentration of particulates of size less than 1.0µm in µg per cubic meter at standard particle.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_2_5_std** (*Optional*): Use the concentration of particulates of size less than 2.5µm in µg per cubic meter at standard particle
+- **pm_2_5_std** (*Optional*): Use the concentration of particulates of size less than 2.5µm in µg per cubic meter at standard particle.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_10_0_std** (*Optional*): Use the concentration of particulates of size less than 10.0µm in µg per cubic meter at standard particle
+- **pm_10_0_std** (*Optional*): Use the concentration of particulates of size less than 10.0µm in µg per cubic meter at standard particle.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_1_0** (*Optional*): Use the concentration of particulates of size less than 1.0µm in µg per cubic meter under atmospheric environment
+- **pm_1_0** (*Optional*): Use the concentration of particulates of size less than 1.0µm in µg per cubic meter under atmospheric environment.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_2_5** (*Optional*): Use the concentration of particulates of size less than 2.5µm in µg per cubic meter under atmospheric environment
+- **pm_2_5** (*Optional*): Use the concentration of particulates of size less than 2.5µm in µg per cubic meter under atmospheric environment.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_10_0** (*Optional*): Use the concentration of particulates of size less than 10.0µm in µg per cubic meter under atmospheric environment
+- **pm_10_0** (*Optional*): Use the concentration of particulates of size less than 10.0µm in µg per cubic meter under atmospheric environment.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_0_3um** (*Optional*): Use the number of particles with diameter beyond 0.3um in 0.1L of air
+- **pm_0_3um** (*Optional*): Use the number of particles with diameter beyond 0.3um in 0.1L of air.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_0_5um** (*Optional*): Use the number of particles with diameter beyond 0.5um in 0.1L of air
+- **pm_0_5um** (*Optional*): Use the number of particles with diameter beyond 0.5um in 0.1L of air.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_1_0um** (*Optional*): Use the number of particles with diameter beyond 1.0um in 0.1L of air
+- **pm_1_0um** (*Optional*): Use the number of particles with diameter beyond 1.0um in 0.1L of air.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_2_5um** (*Optional*): Use the number of particles with diameter beyond 2.5um in 0.1L of air
+- **pm_2_5um** (*Optional*): Use the number of particles with diameter beyond 2.5um in 0.1L of air.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_5_0um** (*Optional*): Use the number of particles with diameter beyond 5.0um in 0.1L of air
+- **pm_5_0um** (*Optional*): Use the number of particles with diameter beyond 5.0um in 0.1L of air. Not supported by the ``PMS5003T`` type sensors.
   All options from :ref:`Sensor <config-sensor>`.
-- **pm_10_0um** (*Optional*): Use the number of particles with diameter beyond 10.0um in 0.1L of air
+- **pm_10_0um** (*Optional*): Use the number of particles with diameter beyond 10.0um in 0.1L of air. Not supported by the ``PMS5003T`` type sensors.
   All options from :ref:`Sensor <config-sensor>`.
 - **temperature** (*Optional*): Use the temperature value in °C for the ``PMS5003T`` and ``PMS5003ST`` type sensors.
   All options from :ref:`Sensor <config-sensor>`.