# Hikvision AX Pro Alarm — 404 notSupport error when controlling the siren

**URL:** <https://community.homey.app/t/hikvision-ax-pro-alarm-404-notsupport-error-when-controlling-the-siren/160613>\
**Category:** Apps\
**Tags:** app, homey-pro\
**Created:** [October 10, 2026, 12:15pm UTC](https://community.homey.app/t/hikvision-ax-pro-alarm-404-notsupport-error-when-controlling-the-siren/160613 "2026-10-10T12:15:21Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Jonathan\_LECERF](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/jonathan_lecerf/32/171894_2.png) [@Jonathan\_LECERF](https://community.homey.app/u/Jonathan_LECERF)\
**Post date:** [October 10, 2026, 12:15pm UTC](https://community.homey.app/t/hikvision-ax-pro-alarm-404-notsupport-error-when-controlling-the-siren/160613/1 "2026-10-10T12:15:21Z")

</div>

Hello,

I’m running **Homey Self-Hosted Server** on a Synology NAS with the **Hikvision AX Pro Alarm app, version 1.8.0**.

My alarm panel is a **Hikvision AX Pro DS-PWA64-L-WE** , running firmware **V1.3.1 build 251113** , with three paired sirens.

When I execute the **“State the siren”** action card, selecting either **Sound** or **Silence** , the command fails. For Sound, the exact error is:

```auto
PUT /ISAPI/SecurityCP/control/siren/test -> 404 notSupport

```

The connection to the panel works: devices and their states appear in Homey. The siren sound test also works through the Hik-Connect mobile app, from each siren’s settings.

I checked the Homey app’s source code: it uses `/ISAPI/SecurityCP/control/siren/test` and `/ISAPI/SecurityCP/control/siren/stop`, without a siren ID.

Direct ISAPI tests confirm that authentication and reading the configuration of all three sirens work. However, an individual command to `/ISAPI/SecurityCP/control/siren/1?format=json`, with `SirenCtrl.switch` set to either `open` or `close`, also returns `404 notSupport`.

Has anyone encountered this issue with this firmware? Have you found a compatible ISAPI command or another way to trigger the sirens from a Homey Flow?

Thanks for your help.