Pressure Systems International (P.S.I.) introduced its Digital ThermALERT sensor that provides real-time wheel-end temperature visibility through a telematics communication portal. The company said its original patented standard ThermALERT alerts users to elevated wheel-end temperatures that could cause damage, wheel loss, or fire and excess roadside calls if not addressed early. That sensor has been standard on the P.S.I ATIS product since 2017.
New P.S.I. Digital Sensor Provides Real-Time Visibility of Wheel-End Temperatures
Pressure Systems International (P.S.I.) has introduced its Digital ThermALERT sensor that provides real-time wheel-end temperature visibility for heay-duty trucks through a telematics communication portal.

Craig Smith, P.S.I. marketing manager, said the company’s new ThermAlert app can help fleets identify the root cause of wheel issues and how to resolve them.
Photo: Jack Roberts
Digital ThermALERT, P.S.I. said at a Feb. 26 press briefing at the annual meeting of the American Trucking Associations’ Technology & Maintenance Council in Orlando, “provides all the benefits of traditional ThermALERT plus full visibility of wheel-end temperatures thru P.S.I.’s TireView LIVE portal or through one of their telematics integration partners such as Road Ready from Clarience Technologies.”
The company said that real-time reporting from Digital ThermALERT aids in identifying the normal wheel-end operating temperature of a user’s equipment and the ability to analyze wheel-end history. It can also help identify equipment or maintenance issues such as a dragging brake or bearing issue, which then can be scheduled for service before damage can occur. The alert activation level can be customized by the user depending on equipment and personal preference.
Digital ThermALERT is optimally located to read the temperature inside the spindle end at the wheel bearings and minimizes the effects of external thermal influences. The sensor has a replaceable battery with a conductor wire that is fed through the axle end and attached to a modified PSI spindle plug.
“ThermALERT can also help fleets determine the root cause of a failure, which is key,” said Craig Smith, P.S.I. marketing manager. “We had one customer, for example, who had a batch of trailers with wheels that were way overheating — well over normal operating conditions. By using ThermALERT, they were able to trace the trailers back to a specific repair facility and a technician who was just not adjusting the brakes correctly. They were able to get that technician the training he needed and fixed the problem.”
Also introduced at the P.S.I. press conference:
ATIS/MTIS Driver Video: Driver video explains system operation and what to do when the system indicator light illuminates. It’s viewable on mobile devices via QR code or desktop. A new decal with a QR code can be ordered from P.S.I. for retrofit placement on existing assets. New orders will receive an updated system decal with the QR code.
TireView LIVE Mobile App: Due to launch April 1, will be available for Apple/Android devices, putting “all the features and benefits of the TireView LIVE portal in the palm of the hand:
Drill down by vehicle type, terminal or region
Data analytics platform for thorough tire analysis
Aid pre-trip tire inspections and post-trip analysis
Sort and share data to make best decisions about PM and in-transit repairs
Convenient over-the-air (OTA) updates and sensor pairing by capturing sensor QR codes using mobile device camera
More Maintenance

Hendrickson Unveils Watchman Smart Wheel-End System at TMC
Hendrickson’s new sensor platform integrates with its TireMaax system to deliver real-time tire and wheel-end insights, targeting uptime and cost savings.
Read More →
Over-the-Air Updates and the Modern Powertrain Explained
Over-the-air updates are moving beyond recalls, and expanding how fleets manage performance, compliance, and uptime.
Read More →
SKF, TMC Expand Hands-On Training to Boost Technician Skills at Annual Meeting
A new partnership between SFK and TMC brings certified, on-site instruction focused on wheel-end reliability and maintenance best practices.
Read More →
Why Higher Pay Isn’t Fixing the Heavy-Duty Technician Shortage
Hiring heavy-duty truck technicians has become a bidding war, but shops that focus on culture, training, and career paths are gaining an edge. That's the takeaway from a TMC panel discussion.
Read More →
Technology & Maintenance Council 2026 Annual Meeting [Photos]
Couldn't make it to Nashville for TMC's 2026 annual meeting? Check out these images.
Read More →
Fullbay Report: Heavy-Duty Shop Revenue Up, Rates Rising, but Shops Still Short on Techs
Strong growth across the heavy-duty repair sector is being tempered by workforce shortages and an aging technician pipeline.
Read More →
How Mack Sees the Next Era of Fleet Intelligence
Telematics has evolved from simple vehicle tracking into a connected service platform that can help fleets boost uptime, improve specifications, and move toward predictive maintenance. Mack executives say AI is now giving fleets a way to turn all that vehicle data into faster, smarter decisions.
Read More →
Clarios Expands Battery Monitoring Into Subscription Service with Battery Manager Pro
A new battery-monitoring-as-a-service program from Clarios Connected Services uses predictive analytics and automatic replacement to reduce downtime and smooth fleet maintenance costs.
Read More →
SAF-Holland’s BrakeSight Aims to Take the Guesswork Out of Air Disc Brake Maintenance
New Haldex sensor technology from SAF-Holland integrates with telematics systems to give fleets continuous insight into air disc brake condition.
Read More →
Vanair Introduces Solar, Battery Power Ecosystem for Class 8 Trucks
The company’s expanded EPEQ ecosystem includes flexible solar panels, lithium batteries, hydraulic power systems, and a portable fast charger for electric trucks.
Read More →
