> For the complete documentation index, see [llms.txt](https://grid-exchange-fabric.gitbook.io/gxf/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://grid-exchange-fabric.gitbook.io/gxf/protocols/oslp/oslp-v0.6.1/setlight.md).
# SetLight
## Description
Request that notifies the device to switch on or off one or several light relays, optionally with a dim-value per relay. If optional value 'index' is omitted, all relays configured as light are switched. In that case, all light relays will switch using only 1 LightValue instance for 'values'. In case the value 'index' is included, multiple instances of LightValue can be used (up to 6), each indicating a particular relay. If optional value 'dimValue' is omitted, then default values of 0 and 100 will be assumed for either 'on = false' or 'on = true'.
Response communicates status.
## Message definitions
```javascript
message SetLightRequest {
repeated LightValue values = 1; // [(nanopb).max_count = 6];
}
message SetLightResponse {
required Status status = 1;
}
```
## Data types
```javascript
message LightValue {
optional bytes index = 1; // [(nanopb).max_size = 1]; // index number of connected light (DALI), none means all connected ligts.
required bool on = 2;
optional bytes dimValue = 3; // [(nanopb).max_size = 1]; // 1 - 100 %
}
enum Status {
OK = 0;
FAILURE = 1; // general failure
REJECTED = 2; // request received in wrong state
}
```
## Example
Soap requests and responses sent to and from platform:
```markup
LianderNetManagement
WEB_OWNER
liander gebruiker
device-01
true
LianderNetManagement|||device-01|||20160105121022551
device-01
LianderNetManagement
WEB_OWNER
liander gebruiker
LianderNetManagement|||device-01|||20160105121022551
device-01
OK
```
OSLP SetLightRequest sent to 'device-01':
```javascript
setLightRequest {
values {
on: true
}
}
```
OSLP SetLightResponse sent to platform:
```javascript
setLightResponse {
status: OK
}
```
---
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