Method 1:
Step 1: Tap My Devices.
Step 2: In order to delete a device, long press on the device. Enter the password and tap on the delete button.
Step 3: Click the black button on the rear of the switch thrice to delete the device.
Method 2:
Step 1: On Homepage, tap on Settings icon present on the top-right side of your screen.
Step 2: Select Delete Z-Wave Device. Enter password and tap on Delete.
Step 3: Click the black button on the rear of the switch thrice to delete the device. When this is completed, tap on the Delete Device button.