diff --git a/lib/devices/capabilities/fan-speed.js b/lib/devices/capabilities/fan-speed.js
new file mode 100644
index 0000000..dfed0c5
--- /dev/null
+++ b/lib/devices/capabilities/fan-speed.js
@@ -0,0 +1,29 @@
+'use strict';
+
+const { Thing } = require('abstract-things');
+const { FanSpeed } = require('abstract-things/climate');
+
+module.exports = Thing.mixin(Parent => class extends Parent.with(FanSpeed) {
+	fs1 = -1;
+	fs2 = -1;
+	propertyUpdated(key, value) {
+		let updated = false;
+		if (key === 'fanSpeed1') {
+			this.fs1 = value;
+			updated = true;
+		}
+		if (key === 'fanSpeed2') {
+			this.fs2 = value;
+			updated = true;
+		}
+
+		if(updated) {
+			const value = this.fs2 || this.fs1;
+			if(value !== -1) {
+				this.updateFanSpeed(value);
+			}
+		}
+
+		super.propertyUpdated(key, value);
+	}
+});