Delta-T Alert Sensor

A Simple Device with Staggering Results

Overview Image


Delta-T Alert™ is a wireless, self-contained temperature-monitoring sensor that attaches to an electrical enclosure cover. The patented, Delta-T Alert™ unit is simple to install and comprises of two temperature sensors – one to monitor the electrical enclosure’s interior temperatures and the second to monitor the ambient room temperature where the enclosure is located. The Delta-T Alert™ sensors are then configured to collect data daily, at specific time intervals. The data is wirelessly transmitted for analysis and trending and warns the operator of abnormal temperature rises within their electrical enclosures before more serious problems occur. As a result, Delta-T Alert™ provides an easier, more effective way to prevent costly electrical damage and system downtime.

24-Hour Condition Monitoring

Safely bridges the gap between scheduled inspection routes by monitoring and reporting asset condition/temperature, effectively tracking system reliability and providing notification of any critical issues that may arise.

Inexpensive & Easy to Install

Low-cost hardware contains 2 temperature monitors, recording both internal and ambient temperatures. Simply mount with a single drill hole or permanent magnet, then pair in just 2 minutes with gateway and software.

Customized Settings & Reporting

Regardless of environment, the customizable settings for temperature disparity allow for accuracy in both alarm settings and condition reporting to track and trend asset performance and health to increase reliability.


Battery Operated

Delta-T Sensors operate on three (3) standard “AA” batteries which will last up to 18 months under normal operating conditions. Battery status is communicated wirelessly to the software and battery swap can be performed without the need for an equipment shutdown.

Custom Reporting & Scheduling

Set schedules and get reports instantly.

Proudly Made in the United States

IRISS manufactures and assembles all products at our global headquarters located in Bradenton, FL.

350ft Wireless Connectivity

Each Delta-T sensor communicates wirelessly to the Delta-T Gateway with range of up to 350ft unobstructed. Walls, equipment and other obstructions may reduce the effective range. Up to 230 Delta T sensors can communicate to a single Delta T Gateway and multiple Gateways can be tied together to create your total monitoring system.

Dual Temperature & Humidity Sensors

Delta-T Sensors communicate the Internal Equipment Air Temperature, the Ambient Air Temperature and the Relative Humidity back through the Delta T Gateway. Data is logged via the Delta T Software and trend plots can be viewed for each Delta T Sensor.

Fast and Easy Installation

Following a few simple instructions, IRISS inspection windows can be quickly installed on switchgear and MCC panel covers, as well as transformers and other electrical equipment. Each window comes with an installation guide, as well as links to installation videos.


General Specifications
Overall Dimensions 69.9 x 114.3 x 48.3mm (2.75 x 4.5 x 1.9in)
Weight With Batteries 172g (0.38lb), Without Bateries 104g (0.23lb)
IP/ NEMA Environment Rating IP25 / NEMA 1
Body Material UL 94 5VA Nylon (switchgear-grade plastic); -40°C (-40°F)to 273°C (523°F)
Operating Temperature -40°C (-40°F) to 85°C (185°F)
Real Time Clock Yes
Over The Air Updates Yes
Audio Alarm Yes
Compliances FCC, IC CE ANZ
Voltage Range Any
Sensor Specifications
Wireless Technology Z-WaveTM 5th Gen
RF Range 50 ft Optimum / Up to 300 ft Line of Sight
Temperature Reading Accuracy +/- 0.5°C (+/- 32.9°F)
Humidity Reading Accuracy +/- 1%
Frequency 908.40 MHz, 916.00 MHz 868.40 MHz, 869.85 MHz 919.80 MHz, 921.40 MHz
Daily Scheduled Reports Up to 8
On Demand Status Report Yes
Critical Alarm Reports Yes
Inspection Capabilities and Applications
Temperature; Humidity; Medium/High Voltage Applications
Power Supply 3x AA batteries
Operating Voltage 3x 1.5 V battery
Battery Life Variable
Applications Delta T Alert
System Requirements Required Recommended
Operating System Windows XP Windows 7 or Higher
Processor Speed 500 MHz 1 GHz
Free Hard Disk Space 5 GB 10 GB
Display Resolution 800 x 600 800 x 600 or Higher
Warranty 12 Month Limited Warranty
View Full Specification

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