diff --git a/sdk/device_handler.go b/sdk/device_handler.go
index 0b60eaf1..e453e1cd 100644
--- a/sdk/device_handler.go
+++ b/sdk/device_handler.go
@@ -46,6 +46,9 @@ type DeviceHandler struct {
 	// other handler functions (e.g. read, write) defined. The listener function
 	// will run in a separate goroutine for each device. The goroutines are started
 	// before the read/write loops.
+	//
+	// NOTE: The Listen function is deprecated and will be removed in a future version
+	// of the SDK.
 	Listen func(*Device, chan *ReadContext) error
 
 	// Actions specifies a list of the supported write actions for the handler.
diff --git a/sdk/scheduler.go b/sdk/scheduler.go
index 02ca73c7..8e07e5a7 100644
--- a/sdk/scheduler.go
+++ b/sdk/scheduler.go
@@ -443,6 +443,8 @@ func (scheduler *scheduler) scheduleListen() {
 		log.Info("[scheduler] listeners will not be scheduled (listening globally disabled)")
 		return
 	}
+	// DEPRECATE (etd)
+	log.Warning("[scheduler] Deprecation Warning: the SDK listener behavior for DeviceHandlers will be removed in a future release of the SDK")
 
 	if !scheduler.deviceManager.HasListenerHandlers() {
 		log.Info("[scheduler] listeners will not be scheduled (no listener handlers registered)")