Trigger Hikvision G3 red/blue "Flashing Light Alarm"

Configuration
1

Hoping someone’s cracked this. I want to fire the red/blue flashing light alarm on my Hikvision cameras from Home Assistant — ideally scoped to a specific zone — and I’ve hit a wall on the ISAPI side.

Setup

  • Integration: hikvision_next (custom component)
  • Cameras: DS-2CD2387G3-LIS2UY, firmware V5.8.40
  • I already control detection enable/disable + audio (AudioAlarm) fine over ISAPI with digest auth

Smart-event types I’m using

  • Intrusion / Field Detection (drive + car zones; this is also what my loitering deterrent triggers on)
  • Line Crossing (drive/pavement boundary)

Goal
When someone loiters on the pavement just outside my boundary at night, I want a silent red/blue flash (no audible) — without it firing for my own driveway or for legit visitors/deliveries. The on-camera “Flashing Light Alarm” linkage does exactly the flash I want, but I can’t find a way to trigger or scope it from HA.

What I’ve already tried (all failed on the G3, so you don’t have to):

  • PUT/GET /ISAPI/System/externalDevice → 403 notSupport (isapi_sheild_light_basic not support)
  • GET /ISAPI/Image/channels/1/whiteLightAlarm/capabilities → 404
  • GET /ISAPI/Event/triggers/fielddetection-1 and linedetection-1 → linkage list only has record, beep, center, customOverHTTP — no whiteLight/flash node
  • /ISAPI/Image/channels/1/supplementLight → only colorVuWhiteLight / irLight / eventIntelligence / close. Setting colorVuWhiteLight is ambient-gated — the LED won’t force on, and it’s white, not red/blue
  • Full /ISAPI/Image/channels/1 dump → only SupplementLight (white/IR) + LaserLight (off); no strobe node
  • The IO Alarm Output switch (via hikvision_next) → camera rejects manual toggle (400)

Questions

  1. Has anyone triggered the red/blue Flashing Light Alarm on a G3 AcuSense manually via ISAPI (an endpoint that fires it on demand), or is it strictly an internal event-linkage with no external trigger?
  2. Is there a known ISAPI path for the “flashing light” / shield-light on G3 firmware, or does it need a physical external strobe accessory?

Thanks — happy to run more ISAPI probes and report back if anyone has leads.