Universal Devices ISY994i Controller - Insteon Support + PLM

Easy-to-Use Central Controller Configures and Programs Insteon Devices
  • Kit Comes Complete with ISY-994i Controller and Insteon Dual-Band PLM (PowerLinc Modem)
  • Extends the capabilities of ISY99i Series
  • Remotely Accessible from any Standard Web Browser
  • Does Not Require a PC to Operate
  • Supports 256 Devices/ Scenes and controls up to 300 Programs
  • Apple and Android apps available
  • Title 24 (Open ADR) compliant


  • Details
  • Specs
  • Reviews
  • Manuals
  • What's Included
  • The ISY994i is one of the most advanced Insteon controllers on the market and has numerous features to satisfy the most advanced DIY'er or seasoned home control enthusiast. If you need unbridled control, the ISY994i is your controller.

    The ISY994i supports up to 256 devices and scenes and a maximum of 300 programs. The ISY994i controller is able to configure and program Insteon devices using Insteon native protocols and specifications. This allows it to directly write to Insteon devices internally instead of just in the controller, creating a more robust network. You can set up timer events and custom event triggers, as well as monitor and control all the Insteon-compatible devices in your home from any web-browser anywhere in the world. Now you can check if the lights in your house were left on and remotely control them from your computer at the office.

    Insteon Control

    For Insteon control this device must be paried with an Insteon Dual-Band PLM Serial Interface. The PLM allows for direct communication with your existing Insteon network from the ISY994i controller. The PLM features built-in dual-band technology that sends and receives Insteon signals via powerline and radio frequency (RF), so it doubles as an Access Point. This makes it ideal for new Insteon installs if you have or plan to use an RF-only Insteon-compatible devices like a Mini Remote, Thermostat, Motion Sensor, Open/Close Sensor.

    Extends the capabilities of the ISY994i Series

    • An expansion slot which could be utilized to install and support other protocols such as a Zigbee or Z-Wave
    • Control other network-enabled devices using an optional Network Module (RS-232 devices can be controlled using an ELK IP232 or Global Cache GC-100 and more)
    • Non IR models can be field upgraded to IR platform

    Please Note

    The ISY994i requires an Insteon Serial PowerLinc Modem PLM (sold separately) or available as a Kit.

    ISY994i does provide a port for an optional AC adapter for instances where the PLM does not supply power, or the user prefers to supply power independent of the PLM (for example, PLM 2413S).

    Using any Java-enabled web browser, the ISY-994i gives you the ability to control, monitor and configure all Insteon-compatible devices from any web-browser anywhere in the world. Best of all, no software is needed to gain access to your Insteon network. Simply bring up a browser and type in the URL of your Home Automation Controller.

    MobiLinc X for iOS/Android and all ISY Series Controllers

    MobiLinc X is a modern app for your Insteon, Z-Wave, X10, and all ISY-994i series controllers built with speed, security, and your family in mind. Get started with a free 14-day trial!

    MobiLinc X features:

    • Supports Insteon, Z-Wave, and X10 devices with all ISY-994i series controllers.
    • Supports Lights, Thermostats, Garage Doors, Doors, Outlets, Irrigation, Leak Sensors, Motion, Scenes, Programs, Variables, Fans, Rooms, and Weather.
    • Instant startup status and control of any device, scene, program, variable, or security item. No syncing!
    • Video and Audio streaming for ONVIF certified cameras.
    • ELK Security Panel Support.
    • Supports full ISY configuration including creating/editing/deleting rooms, devices, scenes. Admin Console is not required.
    • Supports Family Management with creating admin and user accounts. Accounts are shared with a QR Code. No usernames/passwords are necessary to get family members connected.
      • Admin Users have full control and can edit/change/delete items.
      • User accounts can control items only. User accounts can not edit.
    • Supports up to two ISYs.
    • Add/Change/Delete Alexa or Google Home spoken names right from the app. Quickly see and manage all your spoken items in one view.
    • Feature Request: Upvote and suggest new features. See what we're working on next and vote for the next feature to get added to MobiLinc X.
    • Full integration with our MobiLinc IFTTT channel supporting notifications, geo-fencing, thousands of devices and services, and more!
    • Alexa Smart Home integration supported.
    • Google Home/Google Assistant integration supported.

    See www.mobilinc.com for more information.

    MobiLinc X ISY Series Screenshots

    Agave Home Automation for Insteon, Z-wave and X10 control via ISY

    Agave - ISY app for mobile home automation of Insteon and Z-Wave devices. Agave Home Automation allows for seamless, secure and customizable remote access to your Universal Devices ISY Controller from your Android smartphone and tablet

    Many Insteon and Z-Wave devices can be controlled through ISY using Agave. If you find one that isn’t supported, contact the developer (we’ll need a node dump of the device from an ISY).

    Agave can control your ELK M1 Home Security system through your ISY. Arm and disarm in all Elk modes including status of and control of bypass of all of your Elk zones.

    Agave works with your favorite Insteon devices (requires an Insteon-compatible ISY). Whether you want to control an Insteon Thermostat, LED light bulb, On/Off Switch Relay, Dimmer switch, IO Linc Sensor/Relay, Triggerlinc Open/Close sensor, Motion sensor (2420 verified), smoke sensor, or an EZFlora/lawn sprinkler, Agave works for you. As new Insteon devices are released, we work to add them quickly to Agave.

    Agave works with several Z-Wave devices (requires a Z-Wave compatible ISY). Schlage Door locks, thermostats, on/off and dimmable switches, MIMOLite sensors, and Aeon Multisensors can be controlled through Agave. If you have a Z-Wave device that isn’t already added to Agave, we’ll work with you to get it added quickly (please contact the developer!).

    Agave can connect to your ISY using any combination of the following methods in the order

    • Direct Connection via private home network (local) connection (usually the “primary” connection)
    • Direct Connection via external network/cellular data connection (may require port forwarding on router) (often the “secondary” connection)
    • UDI Portal (Requires subscription through UDI)

    See www.agaveha.com for more information.

    Agave ISY Controller Screenshots

    Agave Home Automation Features

    • Control of both Insteon, X10 and Z-wave devices via the Universal Devices ISY home control center
    • Secure SSL connection
    • Customizable home screen – Move the controls for you most used devices for easier access
    • Customizable buttons and status updates – Change switch types and status indicators to fit your home automation set up
    • Connect to your home network via WiFi, mobile data or UDI Portal
    • Real time home status updates
    • PIN code locking and Encrypted user credentials
    • Multiple profiles and device support
    • Scene control – single button control for multiple device settings

    Additional Features for the ISY994i Series

    Remotely accessible from anywhere in the world and on any platform

    • Monitor, control, and configure your system remotely.
    • Secure Web Server with certificate management (up to 2048 bits).
    • Automatically create port forwarding rules on your UPnP enabled router.
    • Browser-based Java Applet or Java Web Start Application.
    • Support for Windows, MAC, and Linux.

    Field Upgradeable/Auto Upgrade

    • Many new features added regularly via firmware updates.
    • Admin Console automatically notifies you of official firmware updates
    • Standard ISY994i and ISY994iZw is field upgradeable to ISY994i/IR Pro and ISY994iZw/IR Pro to support additional devices/scenes

    Realtime clock on board

    • Supports Daylight Saving
    • Supports automatic sync with internet time sources (NTP)
    • Automatically calculation of Sunrise/Sunset times based on location

    Device Management

    • For easy monitoring, control and management Devices can be linked to the ISY using thier Insteon address or by pressing their SET buttons. Once linked to the ISY, devices can be monitored, controlled and managed through the ISY's built-in web server and Java-based Administrative Console
    • 3rd party products are available to monitor and control your home from your iPhone, PC, Nokia touch panel, and more!
    • If you already have devices installed and programmed, the ISY can crawl your existing Insteon network to automatically link discovered devices
    • Replace Device: seamlessly replace a defective device with a new one
    • Replace Modem: seamlessly replace a defective modem (PLM) with a new one
    • Restore Devices: simply restore your device to its correct settings if it is factory reset or has somehow lost its programming
    • Create folders/sub-folders to help organize your devices and scenes
    • Support for majority of Insteon products

    Scene Management

    • Supports up to 256 devices/scenes
    • Use simple drag/drop to easily create scenes containing multiple devices
    • Create controller/responder relationships between all devices within the scene
    • Easily change scene attributes for each and every one of the devices within the scene
    • Once programmed, scenes operate completely independent of the ISY for the quickest response time and most reliable operation

    Programs, Schedules, and Variables

    • Programs are easily created by simple mouse point and click
    • Create complex schedules using precise time, from/to, days, sunrise/sunset times, offsets, etc.
    • Create complex triggers based on the combination of schedules, any event (e.g. key press), and many other triggers
    • Use Variables to control the flow of programs
    • Complete support for Wait and Repeat constructs including Random values
    • Custom and user defined email and SMS Notifications to custom user groups

    IR Control (IR Models Only)

    • Control all your Insteon/X10 devices with any infrared universal remote (RC5-compatible)
    • Control other network-enabled devices using our optional Network Module (RS-232 devices can be controlled using an ELK IP232 or Global Cache GC-100 and more)
    • Non IR models can be field upgraded to IR platform

    X10 Support

    • Built-in X10 support includes the use of programs to control your X10 devices using IR, schedules, or events from other Insteon/X10 devices
    • Optional X10/A10 Module features enhanced X10 capabilities, including support for X10 devices in the device tree

    Developer Friendly

    • Free REST, Web Services, and Java SDK for easy integration with 3rd party hardware and software - or development of your own
    • Discounts on products and modules for eligible developers

    Unit Comparison Chart

    ISY994i Controller ISY994i/IR Pro Controller ISY994iZw Controller ISY994iZw/IR Pro Controller
    ISY994i ISY994i/IR Pro ISY994iZw ISY994iZw/IR Pro
    Insteon Support
    (Requires Dual-Band PLM)
    Check Mark Icon Check Mark Icon Check Mark Icon Check Mark Icon
    X10 Support
    (Requires Dual-Band PLM)
    Check Mark Icon Check Mark Icon Check Mark Icon Check Mark Icon
    Z-Wave Support
    (Z-Wave radio included)
    Cross Icon Cross Icon Check Mark Icon Check Mark Icon
    Max. Number Of Nodes
    (Node = deivces,
    buttons, scenes, folders)
    256 1024 256 1024
    Max. Number Of Programs 300 1000 300 1000
    Amazon Echo Support
    (Requires ISY Portal subscription
    ($49. every 2 years)
    Check Mark Icon Check Mark Icon Check Mark Icon Check Mark Icon
    Infrared Remote Control Cross Icon Check Mark Icon Cross Icon Check Mark Icon

    Important Notes:

    • ISY994i requires an Insteon serial PLM (not included). PLM model number 2413S is compatible with ISY
    • ISY994i does require a power supply when used with a PLM which supplies power via the RJ-45 port (for example, PLM model 2413S)
    • ISY994i does provide a port for an optional AC adapter for instances where the PLM does not supply power, or the user prefers to supply power independent of the PLM (for example, PLM model 2413S).
    • Please refer to ISY994i for specifications
    • Please refer to 2413S for specifications
  • Reviews 1 - 10 of 148

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    ISY994i should be in every Insteon household. Review by Wes
    ISY994i should be in every Insteon household.

    I recently upgraded from the Insteon Hub to the ISY994i and I have to say it really makes dealing with Insteon modules a lot easier. My Insteon hub tried to hide the technical details of module-to-module links and in some cases I ended up with phantom links that I couldn't get rid of. The ISY994i gives you a much deeper view into the inner workings of the Insteon modules and I was able to rid my system of some lingering weirdness that the old Insteon hub created.

    The only reason I didn't give the ISY994i a 5 star rating was because it was a bit tricky getting the ISY994i web interface to work on my Ubuntu (Linux) computer. But after some research on the support forum I got it working.

    I highly recommend the ISY994i. I only wish I had purchased it sooner.

    Posted on 1/17/2020

    A rock-solid, flexible, device Review by Scott
    A rock-solid, flexible, device

    I've had my ISY994i for four years now and it has been a rock-solid addition to my home automation system. I'm very tech savvy, so I feel like this product gives power users like me the control and power I need to make complex processes work, but is simple enough for anybody to pick up and start using.

    Posted on 9/18/2019

    Far superior to the Insteon Hub Review by Jerry
    Far superior to the Insteon Hub

    I've had a couple of Hubs fail on me and the user interface, especially the desktop version, is VERY Poor. But i've been hesitant to buy ISY due to its cost. Sell, when a third hub died recently, i finally bit the bullet and bought one. LESS THAN A WEEK LATER, THEY DROPPED THE PRICE! aghhh!

    Anyway, so far, the ISY is far superior to the hub. So far i've been able to get it to di most of what i have attempted. Its a bit complicated and i haven't figured out all the idiosyncrasies yet but i'm making progress.

    Now that the price has come down, I'd recommend it over the Insteon Hub. So what do I do with the 2 hubs i still have? I'll want to replace at least one of them in my vacation house as soon as i can find the $$ to do so :)

    Posted on 6/1/2019

    Rock-solid, powerful and reliable Review by Randy S.
    Rock-solid, powerful and reliable

    I've had two of these units (main home and vacation home) for the past five years.

    This is the controller you want to get if you're serious about doing real stuff with Insteon and Z-Wave. Yes, the admin console is currently based on Java (if you want a rich, desktop-style app user interface) but there is also a browser-based UI that works fine; it's just not as sophisticated as the Java application. They've improved the launcher in the last few months also; now it automatically queries the ISY you're logging onto and gets the appropriate version of the Java admin console app so there aren't problems anymore with having mismatched versions of the firmware in the ISY and the Java admin console app.

    This unit is capable of real-world tasks that few, if any, other automation controllers can handle. For example, I have some Insteon water leakage detectors near my water heater, well pressure tank, and other places in my basement that might be prone to water leaks. The ISY is capable of the kind of programming necessary to monitor the "heartbeat" signal that the leakage detectors send out once per day to indicate they're alive and well. (They're battery-powered, so you want to be able to monitor them.) If the program running in the ISY hasn't received a "heartbeat" in the last 24 hours, it sends a text to my phone letting me know.

    I also have an Insteon thermostat in my vacation home. Once a day, the ISY unit I have there sends me a status report to my phone with the current house temperature and other vitals. It notifies me if the burglar or fire alarm is sounding, or if the temperature drops below a certain point in the house.

    Finally, one of its best features (in my opinion) is that the ISY keeps its own database of all the links between your Insteon devices (scenes, etc.) and independently verifies them to ensure your Insteon network is "whole" with no missing links. It can then query the link table in any of your Insteon devices and compare that table to the one in its own database, and if there's a mismatch, the ISY can "reach out" to the Insteon device and sync up the device link table with the ISY one. (When programming a whole house of Insteon devices over the network, it is common to have a glitch now and then that results in the link table in a given Insteon device not being set quite correctly.)

    A lot of thought and effort has been put into the design of this device. If you want rock-solid reliability of your Insteon network and the ability to do some serious, real-world applications, this is the best unit out there. And there's an active set of web forums where people share the programs they've developed to do various things. The lead developer of the ISY also participates on these forums.

    Posted on 12/30/2018

    Works well Java access software updates are a real PITA. Review by MevetS
    Works well Java access software updates are a real PITA.

    The software works well although if you ever getting into trying to program things, it is severely limited by having to use the most basic of logic. Makes writing a program a much more complex task then it should be.

    But the biggest PITA with this system is the updating of the code for the Administrative Console. It's more of a pain than it's worth, at times. I've had updates work flawlessly and then again, I've had to repeat the update numerous times. You never know. Often it is is supposed to be because of the Firewall being left on. I'm still trying to get the latest update to work and I have several devices to add and integrate. I guess I'll have to write a support ticket. Unfortunate, since otherwise, this is a very reliable and functional system.

    Posted on 10/16/2017

    Happy Review by MrBates1313

    The controller gets 5 stars. I had a problem getting the PLM working but read some reviews and followed the procedure to power all down, wait 30s, power PLM up, wait 30s, power controller up. That has been working now for a month. Haven't had any power failures so we will see what happens when I do. Hopefully the tech support is right and it should all work fine. We will see.....

    Posted on 11/14/2016

    Not Reliable Review by John
    Not Reliable

    I invested in this controller a couple of years ago when Smarthome discontinued supporting their HouseLinc software. It's not easy to program, and I found it very unreliable. I had to install an Insteon on/off module on the power cord to the ISY so that I could power off the ISY from an Insteon hub and re-power it, whenever the ISY controller would lock up. Telephone support, which Smarthome had promised would be quick and thorough turned out to be a "don't call us, we'll call you... several days later." They could offer no solution for why the ISY was locking up.

    The final straw came a couple of days before we were heading out on vacation, when suddenly the ISY turned everything on (all 60+ Insteon controlled lights and fans). At that point I pulled the plug in the ISY and went back to using HouseLinc. I wish they still supported HouseLinc... it had features the ISY doesn't have, and it actually works.

    Posted on 7/8/2016

    Love the unit Review by Donald
    Love the unit

    I've had it for a month now and love it. Had a house full of X-10 modules with Adcon and the Leopard, however this is much more reliable with Insteon. This unit working with X-10's is marginal, not very reliable, most probably cause is probably the fact they are not designed to work with LED's.
    As far as support, Steve is the best, he knows it all and is a great asset to the system.

    Posted on 3/21/2016

    Finaly a reliable controller ! Review by Sam Beigi
    Finaly a reliable controller !

    Tried the insteon hub first and had to switch to this controller. Reliable and performs well. Could use a better interface but overall a great product.

    Posted on 12/3/2015

    Best Insteon controller !!! Review by Steve Ko
    Best Insteon controller !!!

    I've initially started with the Insteon Hub but ended up returning it and getting the ISY. Solid product

    Posted on 11/30/2015

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    • 1x - ISY994i
    • 1x - 2413S Insteon Dual-Band PLM
    • 2x - 3 Foot Eternet Cable (RJ-45)
    • 1x - Power Supply
    • 1x - Quick Start Guide

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