diff --git a/dump_devinfo.py b/dump_devinfo.py
new file mode 100644
index 000000000..55217426b
--- /dev/null
+++ b/dump_devinfo.py
@@ -0,0 +1,149 @@
+"""This script generates devinfo files for the test suite.
+
+If you have new, yet unsupported device or a device with no devinfo file under kasa/tests/fixtures,
+feel free to run this script and create a PR to add the file to the repository.
+
+Executing this script will several modules and methods one by one,
+and finally execute a query to query all of them at once.
+"""
+import asyncio
+import collections.abc
+import json
+import logging
+import re
+from collections import defaultdict, namedtuple
+from pprint import pprint
+
+import click
+
+from kasa import TPLinkSmartHomeProtocol
+
+Call = namedtuple("Call", "module method")
+
+
+def scrub(res):
+    """Remove identifiers from the given dict."""
+    keys_to_scrub = [
+        "deviceId",
+        "fwId",
+        "hwId",
+        "oemId",
+        "mac",
+        "mic_mac",
+        "latitude_i",
+        "longitude_i",
+        "latitude",
+        "longitude",
+    ]
+
+    for k, v in res.items():
+        if isinstance(v, collections.abc.Mapping):
+            res[k] = scrub(res.get(k))
+        else:
+            if k in keys_to_scrub:
+                if k in ["latitude", "latitude_i", "longitude", "longitude_i"]:
+                    v = 0
+                else:
+                    v = re.sub(r"\w", "0", v)
+
+            res[k] = v
+    return res
+
+
+def default_to_regular(d):
+    """Convert nested defaultdicts to regular ones.
+
+    From https://stackoverflow.com/a/26496899
+    """
+    if isinstance(d, defaultdict):
+        d = {k: default_to_regular(v) for k, v in d.items()}
+    return d
+
+
+@click.command()
+@click.argument("host")
+@click.option("-d", "--debug", is_flag=True)
+def cli(host, debug):
+    """Generate devinfo file for given device."""
+    if debug:
+        logging.basicConfig(level=logging.DEBUG)
+
+    items = [
+        Call(module="system", method="get_sysinfo"),
+        Call(module="emeter", method="get_realtime"),
+        Call(module="smartlife.iot.dimmer", method="get_dimmer_parameters"),
+        Call(module="smartlife.iot.common.emeter", method="get_realtime"),
+        Call(module="smartlife.iot.LAS", method="get_config"),
+        Call(module="smartlife.iot.PIR", method="get_config"),
+
+        Call(
+            module="smartlife.iot.smartbulb.lightingservice", method="get_light_state"
+        ),
+    ]
+
+    successes = []
+
+    for test_call in items:
+
+        async def _run_query():
+            protocol = TPLinkSmartHomeProtocol(host)
+            return await protocol.query({test_call.module: {test_call.method: None}})
+
+        try:
+            click.echo(f"Testing {test_call}..", nl=False)
+            info = asyncio.run(_run_query())
+            resp = info[test_call.module]
+        except Exception as ex:
+            click.echo(click.style(f"FAIL {ex}", fg="red"))
+        else:
+            if "err_msg" in resp:
+                click.echo(click.style(f"FAIL {resp['err_msg']}", fg="red"))
+            else:
+                click.echo(click.style("OK", fg="green"))
+                successes.append((test_call, info))
+
+    final_query = defaultdict(defaultdict)
+    final = defaultdict(defaultdict)
+
+    for succ, resp in successes:
+        final_query[succ.module][succ.method] = None
+        final[succ.module][succ.method] = resp
+
+    final = default_to_regular(final)
+
+    async def _run_final_query():
+        protocol = TPLinkSmartHomeProtocol(host)
+        return await protocol.query(final_query)
+
+    try:
+        final = asyncio.run(_run_final_query())
+    except Exception as ex:
+        click.echo(
+            click.style(
+                f"Unable to query all successes at once: {ex}", bold=True, fg="red"
+            )
+        )
+
+    click.echo("Got %s successes" % len(successes))
+    click.echo(click.style("## device info file ##", bold=True))
+
+    sysinfo = final["system"]["get_sysinfo"]
+    model = sysinfo["model"]
+    hw_version = sysinfo["hw_ver"]
+    sw_version = sysinfo["sw_ver"]
+    sw_version = sw_version.split(" ", maxsplit=1)[0]
+    save_to = f"{model}_{hw_version}_{sw_version}.json"
+    pprint(scrub(final))
+    save = click.prompt(f"Do you want to save the above content to {save_to} (y/n)")
+    if save == "y":
+        click.echo(f"Saving info to {save_to}")
+
+        with open(save_to, "w") as f:
+            json.dump(final, f, sort_keys=True, indent=4)
+            f.write("\n")
+    else:
+        click.echo("Not saving.")
+
+
+if __name__ == "__main__":
+    cli()