MTL RTK P825 SmartAlarm Annunciator

Fits DIN-rail process alarm annunciation where you need 8 to 32 channels, ISA 18.1 sequences, and optional Modbus RTU configuration.

Key advantages

8–32 channels — 8 / 16 / 24 / 32 channel versions.
ISA 18.1 sequences — Standard process alarm sequence set.
Optional Modbus RTU — RS485 plus USB configuration.
DIN-rail SmartAlarm — LED / relay / pushbutton outputs per channel configuration.

Typical applications

DIN-rail process alarm annunciation on control panels.
Projects needing ISA 18.1 first-out / ringback style sequences.
Systems that may add Modbus RTU / RS485 later.

Selection guide

Function — DIN-rail SmartAlarm process alarm annunciator (MTL RTK P825).
Channels — 8 / 16 / 24 / 32 channel versions (OEM catalog).
Alarm sequences — ISA 18.1 alarm sequences.
Communication — Optional Modbus RTU / RS485; USB configuration.
Outputs — LEDs, relays, pushbuttons per channel configuration.
Mounting — DIN-rail mounted annunciator.
Order code — Confirm exact I/O, supply, and marks on the order code / instruction sheet.

Common mistakes

Ordering channel count without mapping which points need relay vs LED-only.
Assuming Modbus RTU is included — it is optional.
Expecting panel-mount large mosaic style — this SKU is DIN-rail SmartAlarm.
Skipping ISA 18.1 sequence selection (first-out, ringback, etc.) on the configuration sheet.
Treating missing approvals in our catalog JSON as “no marks required” — confirm CE/area needs with the order code.

When to RFQ / what to tell us

Channel count (8/16/24/32) and per-channel I/O (LED / relay / pushbutton).
Required ISA 18.1 sequence set.
Modbus RTU / RS485 and USB configuration need.
Supply expectations from your panel standard (confirm on order code).
Quantity, ship-to country, required marks.

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Specs

Spec	Value
SKU	48960
Brand	MTL Instruments
Model	RTK P825
Product type	annunciator
Function	DIN-rail SmartAlarm process alarm annunciator (MTL RTK P825)
Channels	8 / 16 / 24 / 32 channel versions (OEM catalog)
Alarm sequences	ISA 18.1 alarm sequences
Communication	Optional Modbus RTU / RS485; USB configuration
Outputs	LEDs, relays, pushbuttons per channel configuration
Mounting	DIN-rail mounted annunciator
Notes	Eaton MTL P825 SmartAlarm. Confirm exact IO/comms options on order code / instruction sheet.

Documents

MTL Instruments RTK P825 datasheet (PDF)

FAQ

Q: How many channels? A: OEM catalog lists 8 / 16 / 24 / 32 channel versions. State the count in the RFQ.

Q: Which alarm sequences? A: ISA 18.1 sequences. Lock the sequence set on the configuration / order code.

Q: Is Modbus included? A: Optional Modbus RTU / RS485 plus USB configuration. Confirm on the order code.

Q: What should I send for a quote? A: Channel count, I/O map, sequences, protocol, marks, quantity. Available for MTL RTK P825 — we do not claim authorized-dealer status.