Seura STM3-49-S RS-232 / IP control commands

Summary

Séura STM3 Series outdoor displays (49/55/65/86 inch, S and U SKU variants). Controlled via IP (IPv4 UDP, port 3000) using ASCII command strings framed by STX/ETX with a WO3 prefix. Covers power, input selection, volume, and mute.

Transport

protocols:
  - udp
addressing:
  port: 3000  # IPv4
auth:
  type: none  # inferred: no auth procedure in source

Traits

traits:
  - powerable   # inferred from PWD power commands
  - queryable   # inferred from PWD?/INP?/VOL?/MUT? queries
  - levelable   # inferred from VOL 0-100 continuous level
  - routable    # inferred from INP input selection

Actions

# Framing: every payload = "WO3" + [0x02] + <command>:<param> + [0x03].
# [0x02]=STX and [0x03]=ETX sent as hex; command/param as ASCII.
# Optional unit ID (000-255) may be inserted as "WO3<ID>;" before STX (e.g. global = 000).
# Source lists PWD/INP/VOL/MUT commands as separate rows; each input is enumerated.

# --- POWER (PWD) ---
- id: power_off
  label: Power Off
  kind: action
  command: "WO3[0x02]PWD:0[0x03]"
  params: []

- id: power_on
  label: Power On
  kind: action
  command: "WO3[0x02]PWD:1[0x03]"
  params: []

- id: power_toggle
  label: Power Toggle
  kind: action
  command: "WO3[0x02]PWD:3[0x03]"
  params: []

- id: power_query
  label: Power Status Query
  kind: query
  command: "WO3[0x02]PWD:?[0x03]"
  params: []

# --- INPUT (INP) ---
- id: select_input_hdmi1
  label: Select Input HDMI 1
  kind: action
  command: "WO3[0x02]INP:1[0x03]"
  params: []

- id: select_input_hdmi2
  label: Select Input HDMI 2
  kind: action
  command: "WO3[0x02]INP:6[0x03]"
  params: []

- id: select_input_hdmi3
  label: Select Input HDMI 3
  kind: action
  command: "WO3[0x02]INP:9[0x03]"
  params: []

- id: select_input_displayport
  label: Select Input DisplayPort
  kind: action
  command: "WO3[0x02]INP:10[0x03]"
  params: []

- id: select_input_component
  label: Select Input Component
  kind: action
  command: "WO3[0x02]INP:7[0x03]"
  params: []

- id: select_input_hdbaset
  label: Select Input HDBaseT
  kind: action
  command: "WO3[0x02]INP:11[0x03]"
  params: []

- id: input_query
  label: Input Status Query
  kind: query
  command: "WO3[0x02]INP:?[0x03]"
  params: []

# --- VOLUME (VOL) ---
- id: set_volume
  label: Set Volume
  kind: action
  command: "WO3[0x02]VOL:{level}[0x03]"
  params:
    - name: level
      type: integer
      description: "Volume level 0-100. Leading zeros optional."

- id: volume_query
  label: Volume Level Query
  kind: query
  command: "WO3[0x02]VOL:?[0x03]"
  params: []

# --- MUTE (MUT) ---
- id: mute_on
  label: Mute
  kind: action
  command: "WO3[0x02]MUT:1[0x03]"
  params: []

- id: mute_off
  label: Un-mute
  kind: action
  command: "WO3[0x02]MUT:0[0x03]"
  params: []

- id: mute_query
  label: Mute Status Query
  kind: query
  command: "WO3[0x02]MUT:?[0x03]"
  params: []

Feedbacks

# Responses to queries: [0x02]<Word>(<value>)[0x03]
- id: power_state
  type: enum
  values: ["0", "1"]  # 0=off, 1=on
  response_format: "[0x02]Power(<0|1>)[0x03]"

- id: input_state
  type: enum
  values: ["1", "6", "7", "9", "10", "11"]  # code → input name per INP table
  response_format: "[0x02]Input(<code>)[0x03]"

- id: volume_level
  type: integer
  range: [0, 100]
  response_format: "[0x02]Volume(<level>)[0x03]"

- id: mute_state
  type: enum
  values: ["0", "1"]  # 0=unmuted, 1=muted
  response_format: "[0x02]Mute(<0|1>)[0x03]"

- id: command_ack
  type: enum
  values: [OK, ER, INVALID]
  description: "OK=success. ER=error (optional detail after colon). INVALID=command unsupported by device (e.g. tuner on monitor)."
  response_format: "[0x02]<OK|ER|INVALID>[:detail][0x03]"

Variables

# No settable parameter exists that is not already a discrete action above.
# Volume is exposed via set_volume action per source.

Events

# Unsolicited state-change responses sent during transitions (no query needed):
- id: power_change_event
  description: "During power state change, TV emits [0x02]Power(<0|1>)[0x03]."
  format: "[0x02]Power(<0|1>)[0x03]"

- id: input_change_event
  description: "During power-on, TV emits current input as [0x02]Input(<code>)[0x03]."
  format: "[0x02]Input(<code>)[0x03]"

- id: power_toggle_event
  description: "On PWD:3 toggle, TV emits new power state [0x02]Power(<0|1>)[0x03] (and Input event if powering on)."
  format: "[0x02]Power(<0|1>)[0x03]"

Macros

# No multi-step sequences documented in source.

Safety

confirmation_required_for: []
interlocks: []
# UNRESOLVED: source contains no safety warnings, interlocks, or power-on sequencing requirements.
# Service Menu access requires contacting Séura Technical Support (800-957-3872 / techsupport@seura.com) - not documented.

Notes

Framing: every transmission begins with ASCII WO3, then hex 0x02 (STX), then ASCII command + : + parameter, then hex 0x03 (ETX). Data outside STX/ETX is ignored by the TV.
[ ] brackets in source denote hex bytes — brackets themselves are NOT sent.
Parameter length: 1–5 ASCII chars; colon separates command from parameter.
Acknowledgement: after each command, TV replies [0x02]OK[0x03] on success. Errors return [0x02]ER[0x03] (optional detail after colon). Unsupported commands (e.g. tuner on a monitor) return [0x02]INVALID[0x03].
Optional Unit ID: three ASCII digits 000-255, configurable in Factory/Service Menu. Inserted after WO3 and separated from the command by a semicolon (;). 000 = global (all devices).
Source title: "STM3 OUTDOOR DISPLAYS". Heading "IP CONTROL" + prefix WO3 distinguish this from any IR variant.
Compatible SKUs listed: STM3-49-S, STM3-49-U, STM3-55-S, STM3-55-U, STM3-65-S, STM3-65-U, STM3-86-S, STM3-86-U.

Provenance

source_domains:
  - storage.googleapis.com
  - seura.com
  - cdn.shopify.com
source_urls:
  - https://storage.googleapis.com/wp-stateless/2019/10/seura-rs232protocol-stm32.pdf
  - https://storage.googleapis.com/wp-stateless/2019/10/ip-control-for-stm3-outdoor-displays.pdf
  - https://seura.com/pages/for-professionals-residential-downloads
  - "https://cdn.shopify.com/s/files/1/0857/1099/5767/files/ir-codes_1.doc?v=1713286096"
retrieved_at: 2026-09-07T00:23:24.407Z
last_checked_at: 2026-09-19T22:16:31.748Z

Verification Summary

verdict: verified
checked_at: 2026-09-19T22:16:31.748Z
matched_actions: 16
action_count: 16
confidence: medium
summary: "All 16 spec actions map literally to source PWD/INP/VOL/MUT commands; transport (UDP/3000) verbatim; source has no extra command tokens. (6 unresolved item(s) noted in Known Gaps.)"

Known Gaps

- "No service-menu commands documented. No RS-232/serial documented. Firmware compatibility not stated."
- "source contains no safety warnings, interlocks, or power-on sequencing requirements."
- "manufacturer name in source uses accent (\"Séura\"); entity_id uses plain \"seura\" — operator reconcile if needed."
- "no serial/RS-232 config in source; only UDP/IP documented."
- "no response timing, retry, or timeout behavior documented."
- "Service Menu / Factory Menu commands not exposed in this source."

From the AI4AV catalog (https://ai4av.net) · ODbL-1.0

traits: - powerable # inferred from PWD power commands - queryable # inferred from PWD?/INP?/VOL?/MUT? queries - levelable # inferred from VOL 0-100 continuous level - routable # inferred from INP input selection

Actions

# Framing: every payload = "WO3" + [0x02] + <command>:<param> + [0x03]. # [0x02]=STX and [0x03]=ETX sent as hex; command/param as ASCII. # Optional unit ID (000-255) may be inserted as "WO3<ID>;" before STX (e.g. global = 000). # Source lists PWD/INP/VOL/MUT commands as separate rows; each input is enumerated. # --- POWER (PWD) --- - id: power_off label: Power Off kind: action command: "WO3[0x02]PWD:0[0x03]" params: [] - id: power_on label: Power On kind: action command: "WO3[0x02]PWD:1[0x03]" params: [] - id: power_toggle label: Power Toggle kind: action command: "WO3[0x02]PWD:3[0x03]" params: [] - id: power_query label: Power Status Query kind: query command: "WO3[0x02]PWD:?[0x03]" params: [] # --- INPUT (INP) --- - id: select_input_hdmi1 label: Select Input HDMI 1 kind: action command: "WO3[0x02]INP:1[0x03]" params: [] - id: select_input_hdmi2 label: Select Input HDMI 2 kind: action command: "WO3[0x02]INP:6[0x03]" params: [] - id: select_input_hdmi3 label: Select Input HDMI 3 kind: action command: "WO3[0x02]INP:9[0x03]" params: [] - id: select_input_displayport label: Select Input DisplayPort kind: action command: "WO3[0x02]INP:10[0x03]" params: [] - id: select_input_component label: Select Input Component kind: action command: "WO3[0x02]INP:7[0x03]" params: [] - id: select_input_hdbaset label: Select Input HDBaseT kind: action command: "WO3[0x02]INP:11[0x03]" params: [] - id: input_query label: Input Status Query kind: query command: "WO3[0x02]INP:?[0x03]" params: [] # --- VOLUME (VOL) --- - id: set_volume label: Set Volume kind: action command: "WO3[0x02]VOL:{level}[0x03]" params: - name: level type: integer description: "Volume level 0-100. Leading zeros optional." - id: volume_query label: Volume Level Query kind: query command: "WO3[0x02]VOL:?[0x03]" params: [] # --- MUTE (MUT) --- - id: mute_on label: Mute kind: action command: "WO3[0x02]MUT:1[0x03]" params: [] - id: mute_off label: Un-mute kind: action command: "WO3[0x02]MUT:0[0x03]" params: [] - id: mute_query label: Mute Status Query kind: query command: "WO3[0x02]MUT:?[0x03]" params: []

Feedbacks

# Responses to queries: [0x02]<Word>(<value>)[0x03] - id: power_state type: enum values: ["0", "1"] # 0=off, 1=on response_format: "[0x02]Power(<0|1>)[0x03]" - id: input_state type: enum values: ["1", "6", "7", "9", "10", "11"] # code → input name per INP table response_format: "[0x02]Input(<code>)[0x03]" - id: volume_level type: integer range: [0, 100] response_format: "[0x02]Volume(<level>)[0x03]" - id: mute_state type: enum values: ["0", "1"] # 0=unmuted, 1=muted response_format: "[0x02]Mute(<0|1>)[0x03]" - id: command_ack type: enum values: [OK, ER, INVALID] description: "OK=success. ER=error (optional detail after colon). INVALID=command unsupported by device (e.g. tuner on monitor)." response_format: "[0x02]<OK|ER|INVALID>[:detail][0x03]"

Events

# Unsolicited state-change responses sent during transitions (no query needed): - id: power_change_event description: "During power state change, TV emits [0x02]Power(<0|1>)[0x03]." format: "[0x02]Power(<0|1>)[0x03]" - id: input_change_event description: "During power-on, TV emits current input as [0x02]Input(<code>)[0x03]." format: "[0x02]Input(<code>)[0x03]" - id: power_toggle_event description: "On PWD:3 toggle, TV emits new power state [0x02]Power(<0|1>)[0x03] (and Input event if powering on)." format: "[0x02]Power(<0|1>)[0x03]"

confirmation_required_for: [] interlocks: [] # UNRESOLVED: source contains no safety warnings, interlocks, or power-on sequencing requirements. # Service Menu access requires contacting Séura Technical Support (800-957-3872 / techsupport@seura.com) - not documented.

Notes

Framing: every transmission begins with ASCII WO3, then hex 0x02 (STX), then ASCII command + : + parameter, then hex 0x03 (ETX). Data outside STX/ETX is ignored by the TV.

[ ] brackets in source denote hex bytes — brackets themselves are NOT sent.

Parameter length: 1–5 ASCII chars; colon separates command from parameter.

Acknowledgement: after each command, TV replies [0x02]OK[0x03] on success. Errors return [0x02]ER[0x03] (optional detail after colon). Unsupported commands (e.g. tuner on a monitor) return [0x02]INVALID[0x03].

Optional Unit ID: three ASCII digits 000-255, configurable in Factory/Service Menu. Inserted after WO3 and separated from the command by a semicolon (;). 000 = global (all devices).

Source title: "STM3 OUTDOOR DISPLAYS". Heading "IP CONTROL" + prefix WO3 distinguish this from any IR variant.

Compatible SKUs listed: STM3-49-S, STM3-49-U, STM3-55-S, STM3-55-U, STM3-65-S, STM3-65-U, STM3-86-S, STM3-86-U.

Provenance

source_domains: - storage.googleapis.com - seura.com - cdn.shopify.com source_urls: - https://storage.googleapis.com/wp-stateless/2019/10/seura-rs232protocol-stm32.pdf - https://storage.googleapis.com/wp-stateless/2019/10/ip-control-for-stm3-outdoor-displays.pdf - https://seura.com/pages/for-professionals-residential-downloads - "https://cdn.shopify.com/s/files/1/0857/1099/5767/files/ir-codes_1.doc?v=1713286096" retrieved_at: 2026-09-07T00:23:24.407Z last_checked_at: 2026-09-19T22:16:31.748Z

Verification Summary

verdict: verified checked_at: 2026-09-19T22:16:31.748Z matched_actions: 16 action_count: 16 confidence: medium summary: "All 16 spec actions map literally to source PWD/INP/VOL/MUT commands; transport (UDP/3000) verbatim; source has no extra command tokens. (6 unresolved item(s) noted in Known Gaps.)"

Known Gaps

- "No service-menu commands documented. No RS-232/serial documented. Firmware compatibility not stated." - "source contains no safety warnings, interlocks, or power-on sequencing requirements." - "manufacturer name in source uses accent (\"Séura\"); entity_id uses plain \"seura\" — operator reconcile if needed." - "no serial/RS-232 config in source; only UDP/IP documented." - "no response timing, retry, or timeout behavior documented." - "Service Menu / Factory Menu commands not exposed in this source."

From the AI4AV catalog (https://ai4av.net) · ODbL-1.0

Séura STM3 Series Control Spec

Compatible models

Summary

Transport

Traits

Actions

Feedbacks

Variables

Events

Macros

Safety

Notes

Provenance

Verification Summary

Known Gaps

Source & contribution

Séura STM3 Series Control Spec

Compatible models

Summary

Transport

Traits

Actions

Feedbacks

Variables

Events

Macros

Safety

Notes

Provenance

Verification Summary

Known Gaps

Source & contribution