I just recently purchased one of these and there is a small, green indicator light at the bottom of the switch. You can configure how the indicator light works by a series of button presses. By default it is ON when the light/switch is in the OFF position. You can toggle this so it is the opposite or you can have it on all the time.
When the light is off you can not tell there is an indicator there as it is a simple LED behind the plastic housing.
Leviton Decora SmartTM Z-Wave® devices have a locator LED on the
bottom of the paddle. The operation of the LED can be changed.
Status Mode: LED On when the load is On:
The Locator LED is used to show the current state of the load:
• Enter Programming Mode by holding the top of the paddle for 7
seconds, the Locator LED will turn amber.
• Tap the top of the paddle 4 times.
The Locator LED will quickly flash green and amber.
• Tap the top of the paddle once.
The Locator LED will flash green 3 times to confirm the selection.
Locator Mode: LED On when the load is Off (Default):
The Locator LED is designed to easily find the dimmer in a dark room.
If the setting has been changes and you wish to return to the default
operation.
• Enter Programming Mode by holding the top of the paddle for 7
seconds, the Locator LED will turn amber.
• Tap the top of the paddle 4 times.
The Locator LED will quickly flash green and amber.
• Tap the top of the paddle twice.
The Locator LED will flash amber 3 times to confirm the selection.
LED Off: Locator LED is always Off:
The Locator LED is turned off:
• Enter Programming Mode by holding the top of the paddle for 7
seconds, the Locator LED will blink amber.
• Tap the top of the paddle 4 times.
The Locator LED will quickly flash green and amber.
• Tap the top of the paddle 3 times.
The Locator LED will flash red 3 times to confirm the selection