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Use the Bridge to discover devices and their state. The following excerpt will print all discovered devices for 60 seconds.
```python linenums="1" hl_lines="9"
import asyncio
from dataclasses import asdict
from aioswitcher.bridge import SwitcherBridge
async def print_devices(delay):
def on_device_found_callback(device):
print(asdict(device)) # (1)
async with SwitcherBridge(on_device_found_callback):
await asyncio.sleep(delay)
asyncio.run(print_devices(60))
```
1. for the callback types, check the device pacakge for implementations of
[SwitcherBase](./codedocs.md#src.aioswitcher.device.SwitcherBase).
!!!note
Switcher devices broadcast a state message approximately every 4 seconds.
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