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Secure IoT Controller That Makes Equipment Automation Simple
Transform stand-alone equipment into smart, network-enabled systems with our all-in-one MQTT controller. Create automation tasks without coding, integrate with any IoT platform, and maintain full control of your data—all with enterprise-grade security built in.
Ultra 300 is a TCP/IP Web Enabled MQTT I/O Controller with Built-In Web Server, 2 Relay Outputs, 2 Digital Inputs, 2 Analog Inputs, POE, MQTT Protocol for Industrial Equipment Remote Control and Data Acquisition.
The Ultra 300 is the latest development of Linortek Ethernet I/O controller with MQTT protocol. It is built on Linortek TCP/IP web-based product platform, with built-in web server, hardware-based encryption, supports HTTPS connections. Ultra 300 allows you access, control and monitor your equipment over the network or via Internet from anywhere with any web browser. No add-on software is needed to install, no special programming skills are required. Using relay switched outputs, digital inputs and analog inputs, you can upgrade any stand-alone physical hardwired equipment to a network/ Internet enabled product for remote control and data acquisition with the Ultra 300. Using the widely used MQTT protocol, the Ultra 300 can be connected to an MQTT broker (MQTT server) and publish data as MQTT message to common IoT platforms such as Microsoft Azure, Amazon AWS or IBM Cloud.

Hardware & software for installation and operation included, no software to purchase, no 3rd party server
Powered by POE or 5-48VDC, DINRail or panel mount, push-in spring connectors for easy installation
Browser-based setup, logical condition/action for I/O with no scripting required
Hardware-based encryption, supports HTTPS connections, account authentication, TLS encryption
Collected data can be integrated to a 3rd party software/system using XML, JSON, RESTful API or the MQTT protocol
One-time purchase with no recurring subscription costs or cloud fees

The Ultra 300 MQTT I/O Controller is NOT a cloud-based system. All data is stored locally at your facility, giving you full control of collected records. To use the Ultra 300 locally, connect it to your local network using TCP/IP communication over Ethernet with the provided RJ45 cable. This is ideal for local control & monitoring. Data transfer can be done through RESTful API, XML or MQTT, if needed.
The Ultra 300 can also be used for remote control & monitoring by port forwarding the device to the internet to obtain a web address. This enables you to access, control and monitor the Ultra 300 at anytime, from anywhere, using Internet.
With the built-in server and remote access function, each Ultra 300 unit is an independent system that includes the hardware and software for installation and data acquisition. Once it’s connected to the network, the devices can “talk” to each other over the network that you can build a peer-to-peer (P2P) communication system, this allows you to use one device to control the others over the network or internet, without the use of a centralized administrative system. The Peer-to-Peer communication function is easy to use: just link the IP addresses together from the Remote Devices setup page, enter the IP address, login credentials, setup the condition logic tasks, you are all set!

With the condition-logic task builder, you can easily create tasks based on inputs or outputs’ status using IF…THEN… THAT statements. Create up to three actions for each task. This feature provides you with the ultimate control and monitoring solution for your project.

Discover the technical capabilities that make the Ultra 300 MQTT I/O Controller a versatile and powerful solution for your automation needs.
RESTful API is an interface that two computer systems use to exchange information securely over the internet. Most business applications have to communicate with other internal and third-party applications to perform various tasks. With the RESTful API, you can easily control the device or pull data from the Ultra 300 MQTT I/O Controller without the need of logging into the device, or integrate data collected by the Ultra 300 to a third-party system.

MQTT is a simple messaging protocol, designed for constrained devices with low-bandwidth. It’s a perfect solution for Internet of Things applications. MQTT allows you to send commands to control outputs, read and publish data from sensor nodes and much more. Implementation of MQTT protocol into the Ultra 300 MQTT IO controller provides a standard method to reliably communicate data across networks with any IoT platform and application. It simplifies communication between Ultra300 and other devices, enabling Ultra 300 become a standard product for data acquisition in IIoT field.

Ultra 300 is built on a standard TCP/IP product platform, with a built-in server, relay outputs, digital inputs and analog inputs, making the Ultra 300 a great fit for literally thousands of applications. Whether you are looking for a simple device to remotely reboot your equipment, to save a trip, remotely control a timed alert system, monitor temperature & humidity for a cooler, commercial freezer, server room, or a solution to collect runtime data for preventative maintenance for hundreds of pieces of equipment, the Ultra 300 can do the job!
With the Netbell bell scheduling software on the Ultra 300, you can use the Ultra 300 controller to schedule bell system via the web. Increased RAM and FLASH memories allows you to store multiple sets of schedules on the Ultra 300 board and switch schedules with a click of the mouse, making management of your bell system incredible easy.
Nowadays, virtually every industry is using computerized maintenance management systems (CMMS). The core of any CMMS is its database. With the iTrixx hour metering software the Ultra 300 can publish hour readings as MQTT messages to a cloud CMMS software or to common IoT platforms such as Microsoft Azure, Amazon AWS or IBM Cloud. Once this is set up, the system will remain updated with the latest hour readings and, based on runtime/maintenance intervals, it can automatically trigger work orders.
At Linortek, customer satisfaction is our top priority. Our support team is consistently praised for their knowledge, responsiveness, and willingness to go the extra mile.
Our commitment to you:
√ Responsive communication
√ Expert product knowledge
√ Troubleshooting assistance
√ Installation guidance
√ Ongoing support for the life of your product
Posted on Google marek konarkowskiTrustindex verifies that the original source of the review is Google. Maria is a GREAT technician and a person as well. Very knowledgeable and very helpful. Very patient too :) Thank you Maria very much !Posted on Google Technology DepartmentTrustindex verifies that the original source of the review is Google. System was great to install and gave us the precision timing for our bells needed to integrate the new time driven and time dependent sync, thanks for making such a great product.Posted on Google Dale GruberTrustindex verifies that the original source of the review is Google. I purchased 3 Netbell systems for our manufacturing plant. First, the buzzers work great and have helped our breaks start and stop much more consistently. Even more, their customer support is INCREDIBLE. Maria is the best I've ever been helped with. She first helped me get everything wired and installed myself. About a year later, she helped me on the live chat on their website and she walked me through everything so well. Everyone dreads customer support. With this company and Maria, it is actually super helpful. You don't wait forever. You don't wait for responses. You are dealing with really brilliant and personable people. I'm just super impressed.Posted on Google Bookkeeper AtchleyTrustindex verifies that the original source of the review is Google. We were in serious need of help and Maria was AMAZING! HIGH recommendation!Posted on Google eric sandlinTrustindex verifies that the original source of the review is Google. Maria was so helpful. I had a connection problem and she help me for two days until we solved the issue. Thank you Maria!!!!Posted on Google Steve MTrustindex verifies that the original source of the review is Google. Cool product, but the service is the best part! Maria is always willing and able to help, and responds very quickly (even on her day off!) Thanks Maria!Posted on Google arturo garciaTrustindex verifies that the original source of the review is Google. I will make mine short. we had issues with trying to get connected to our network. Maria one of the support techs helped me out for about 4 hours trying to get it connected to our network. after exhausting all our options we found out that with our upgraded network we needed to get IT involved to let this device talk to network. now it is just a matter of getting all the timers dialed in and putting it in operation.Posted on Google Jeremy McElroyTrustindex verifies that the original source of the review is Google. The school I work for has been using a Linortek bell system for years and we just upgraded to a new bell/PA system combo. We're still in the process of installation but so far, they have been super helpful in answering all our questions and talking us through details, and I have been very happy with the quality of the new system in my initial testing. Highly recommend!Posted on Google Melora ChangTrustindex verifies that the original source of the review is Google. Tatiana, Maria, and Liyu are fantastic to speak to. They made everything so easy and smooth. Such a great team of people to do business with (sales, it, and management). Their service is fantastic. Thank you!
✓ Cut maintenance costs – Schedule based on actual usage, not guesswork
✓ No monthly fees – One time purchase, hardware & software included
✓ Setup in minutes – WiFi connection, mobile monitoring, automatic reports
Linortek’s products are designed, manufactured, and supported in the USA, ensuring the highest standards of quality.