Skip to Main Content
  • Instrumart
Instrumart logo
  • Products
  • Brands
  • Applications
  • Lab
  • Blog
  • Account
  • Email Us
  • 1-800-884-4967
  • What can we help you find?

    Can’t find what you’re looking for? Contact one of our engineers today. We’re open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET.
    • 1-800-884-4967
    • Email Us
    • Live Chat
  1. Alarm Annunciators

MTL RTK 725B Alarm Annunciator & Event Recorder

Multi-redundant alarm annunciator with modular design up to 256 channels and 1ms event recording.

MTL RTK 725B Alarm Annunciator & Event Recorder
MTL RTK 725B Combined Annunciator & Event Recorder
Call 1-800-884-4967 for pricing

View Company Reviewsby Trustpilot
Part Number
  • 725B
Manufactured
  • By MTL Instruments
Includes
  • FREE Ground Shipping on orders of $1,000 or more
  • FREE Lifetime Tech Support
Availability
  • Call for availability
Product Manual Product Specs
Questions?
Call 1-800-884-4967 or email sales@instrumart.com. Open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET.
Trustpilot

Overview

Features

  • Bipolar inputs: accepts AC and DC voltages
  • Up to 256 alarm ways
  • Up to 32 output relays
  • 2 integral audibles included
  • 1ms event recording functionality
  • CANBUS® internal communications
  • Isolated RS485 serial communications: 2 or 4 wire
  • Optional integral PSU: 85-264VAC and 88-300VDC
  • Optional protocols:
    • RS485 Modbus
    • RTK/AMS ( Timestamping)
    • TCP/IP DNP3.0
    • IEC6185

Description

The MTL RTK 725B combined annunciator & event recorder is the ideal solution for monitoring critical alarms whatever the size or complexity of the system. The 725B uses CANBUS communication technology and a multi-redundant design to offer a combination of reliability, flexibility, usability and cost of ownership. This also means that there is no single point of failure.

The 725B is supplied with comprehensive diagnostics to monitor all aspects of the system operation. Any fault that is detected will be indicated on the front LEDs and can also drive a diagnostic relay for external indication. It will monitor the field contact voltage and also provide an early warning of wiring problems and ground faults.

The 725B features modular construction. Units can be assembled in almost any shape and size from 1 to 256 channels with a choice of three window sizes and six colors. It is fully configurable for each individual point by connecting the unit to PC or laptop through a standard USB connection.

Documents

Spec Sheets

  • MTL RTK 725B Combined Annunciator & Event Recorder Datasheet PDF (1.9 MB)

Manuals

  • MTL RTK 725B Combined Annunciator & Event Recorder Manual PDF (12.0 MB)

Need Help? Call a Calibration engineer at 1-800-884-4967

We're open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET

Angelo S. headshot Angelo S.
Cal & Pressure Engineering Lead
6 years at Instrumart
Shawn S. headshot Shawn S.
Senior Applications Engineer
30 years at Instrumart
Mike C. headshot Mike C.
Senior Applications Engineer
24 years at Instrumart
Fabian M. headshot Fabian M.
Applications Engineer
Liam W. headshot Liam W.
Applications Engineer
2 years at Instrumart
John A. headshot John A.
Senior Applications Engineer
19 years at Instrumart
Nate H. headshot Nate H.
Applications Engineer
Mark D. headshot Mark D.
Applications Engineer
13 years at Instrumart
Brynn O.S. headshot Brynn O.S.
Applications Engineer
3 years at Instrumart
Angelo S. headshot Angelo S.
Cal & Pressure Engineering Lead
6 years at Instrumart
Shawn S. headshot Shawn S.
Senior Applications Engineer
30 years at Instrumart
Mike C. headshot Mike C.
Senior Applications Engineer
24 years at Instrumart
Fabian M. headshot Fabian M.
Applications Engineer
Liam W. headshot Liam W.
Applications Engineer
2 years at Instrumart
John A. headshot John A.
Senior Applications Engineer
19 years at Instrumart
Nate H. headshot Nate H.
Applications Engineer
Mark D. headshot Mark D.
Applications Engineer
13 years at Instrumart

Recently Viewed

MTL RTK 725B Alarm Annunciator & Event Recorder
MTL RTK 725B Alarm Annunciator & Event Recorder
United States Canada Mexico
Shop
Products
Brands
Applications
Support
Customer Service
Ask a Question
Live Chat
Track Order
Fraud Prevention
Financing
Our Company
Blog
About Us
Contact Us
Jobs
Travel Information
Our Team
Privacy Policy
Accessibility Statement
Connect
1-800-884-4967
sales@instrumart.com
Instrumart
35 Green Mountain Dr
S Burlington, VT 05403 US
Mo-Th 8:00am to 5:30pm ET
Fr 8:00am to 5:00pm ET
Join Us on Facebook
Follow Us on X

Instrumart is a member of a family of industrial stores

Instrumart Compressor World Pump World BioPharm World Filtration World Motion World Qualitrol Engineered Solutions Wholesale Air Pipe
© Instrumart 2025

Family of Industrial Stores

Welcome to our family of stores, your go-to source for a wide selection of commercial and industrial products in the flow control and automation sectors. Each store features a curated range of specialized industrial solutions, with many items designed to complement each other, ensuring you can find everything you need for your specific application. Explore the stores below to discover our extensive product offerings for your business needs.

  • Instrumart

    Shop Industrial and Laboratory Instruments.

    Shop Now!
  • Compressor World

    Shop Compressed Air Equipment.

    Shop Now!
  • Pump World

    Shop Industrial, Water, and Waste Water Pumps.

    Shop Now!
  • BioPharm World

    Shop Sanitary Process Solutions and Products.

    Shop Now!
  • Filtration World

    Shop Industrial Filters.

    Shop Now!
  • Motion World

    Shop Motion Control and Process Automation Systems.

    Shop Now!
  • Qualitrol

    Shop Remanufactured or Repair Automation Products.

    Shop Now!
  • Engineered Solutions

    Shop Custom Engineered and Manufactured Systems.

    Shop Now!
  • Wholesale Air Pipe

    Shop Air Piping.

    Shop Now!