diff --git a/source/_integrations/elkm1.markdown b/source/_integrations/elkm1.markdown
index 60f1676b597..e79d056069a 100644
--- a/source/_integrations/elkm1.markdown
+++ b/source/_integrations/elkm1.markdown
@@ -4,6 +4,7 @@ description: Instructions to setup the Elk-M1 controller.
 ha_release: 0.81
 ha_category:
   - Alarm
+  - Binary Sensor
   - Climate
   - Hub
   - Light
@@ -19,6 +20,7 @@ ha_codeowners:
   - '@bdraco'
 ha_platforms:
   - alarm_control_panel
+  - binary_sensor
   - climate
   - light
   - scene
@@ -33,12 +35,13 @@ The Elk-M1 controller is manufactured by [Elk Products](https://www.elkproducts.
 
 There is currently support for the following device types within Home Assistant:
 
-- **Alarm** - An Elk-M1 area (also known as partition) is represented as an `alarm_control_panel`.
-- **Climate** - An Elk-M1 thermostat is represented as a `climate` entity.
-- **Light** - An Elk-M1 light (which can be X10, Insteon, UPB) is represented as a `light`.
-- **Scene** - Elk-M1 tasks are represented as `scene` entities.
-- **Sensor** - Elk-M1 counters, keypads, panel, settings, and zones are represented as `sensor` entities.
-- **Switch** - Elk-M1 outputs are represented as `switch` entities.
+- **Alarm** - An ElkM1 area (also known as partition) is represented as an `alarm_control_panel`.
+- **Binary Sensor** - ElkM1 zones that have 4 states (i.e.: are not analog zones) are represented as `binary_sensor` entities. `Normal` is `off` and any of the other values is `on`.
+- **Climate** - An ElkM1 thermostat is represented as a `climate` entity.
+- **Light** - An ElkM1 light (which can be X10, Insteon, UPB) is represented as a `light`.
+- **Scene** - ElkM1 tasks are represented as `scene` entities.
+- **Sensor** - ElkM1 counters, keypads, panel, settings, and zones are represented as `sensor` entities.
+- **Switch** - ElkM1 outputs are represented as `switch` entities.
 
 The implementation follows the Elk Products ElkM1 "ASCII Protocol & Interface 
 Specification, Revision 1.84" document. This document can be found on the Internet.