If you use this driver
You can use level steps
You can also use level steps from Rules API
{
"command": {
"devices": [
"device-id"
],
"commands": [
{
"component": "main",
"capability": "legendabsolute60149.levelSteps",
"command": "setLevelSteps",
"arguments": [{"decimal": -10.0 }]
}
]
}
}
If you perform this action every ten seconds then you might be able to do the action you want.