diff --git a/source/_integrations/dsmr.markdown b/source/_integrations/dsmr.markdown
index fce170641eb..c0acc356e45 100644
--- a/source/_integrations/dsmr.markdown
+++ b/source/_integrations/dsmr.markdown
@@ -64,6 +64,12 @@ This integration is known to work for:
 - Ziv E0058 ESMR5
 - EasyMeter Q3D
 
+### M-Bus support
+
+A smart meter can have multiple subdevices, also known as [M-Bus](https://m-bus.com/) devices.
+For the <abbr title="Dutch smart meter requirement">DSMR</abbr> version 5B, support was added for water and gas M-Bus devices. This means you can have up to 4 subdevices on your <abbr title="Dutch smart meter requirement">DSMR</abbr> meter.
+While previously only 1 gas meter was supported, there is now support for multiple gas and water meters.
+
 ### Connecting to the meter
 
 Connection can be done directly to the meter via a USB to serial connector, or through a serial to network proxy.