Made in USA
No software to install. No cloud accounts to create. Connect up to three thermocouples, power on, monitor.
Plug three K-Type probes, ours or your own, into the on-board connectors. Built-in hot and cold junctions deliver accurate readings, and each connector also accepts a high-temperature probe rated up to 2000°F, or other thermocouple types and ranges, when a process runs hotter.
Mount the enclosure on or near your equipment, optional magnetic hardware makes it tool-free. Run on the D-cell with Supercap or add the external-power option for permanent installations.
900MHz self-forming wireless mesh network. Up to 2-mile line-of-sight range with the on-board antenna.
Browser dashboards, per-channel threshold alerts, and CSV export through the Atrium gateway. Compare all three zones on one timeline and catch excursions before they become failures.
Each is a different box, with the same software and alerts on the Atrium gateway. Choose by how many points you need to watch from one spot.
Pair the sensor with an Atrium Gateway, open a browser on your network, and drag the readings you care about onto a dashboard. No code to write.
Three-channel temperature monitoring that runs locally. No cloud dependency. No software license.
Three on-board K-Type connectors read three independent temperature points from a single sensor, each with built-in hot and cold junctions for accurate readings.
Add three K-Type thermocouple probes (1 m, 24 AWG cable, rated to 500°F) when you order, or skip them and connect thermocouples you already have. Each connector also accepts a high-temperature probe rated up to 2000°F.
Beyond the standard K-Type, each connector accepts other thermocouple types on request, so you can match the probe to the process. Types J, T, E, and N cover general-purpose, cryogenic, and high-sensitivity work; noble-metal types S, R, and B handle precision measurement up to 1600–1700°C. Swap probes without changing the sensor.
A D-cell with Supercap delivers up to 5 years of battery life. An external-power option is also available for permanent installations.
An IP65-rated enclosure with wall-mount and magnet-mount options stands up to harsh industrial environments, while the on-board antenna keeps installs simple. The IP65 rating covers the main enclosure only, not the thermocouple probe.
Update firmware wirelessly across your fleet over the wireless mesh network. No climbing ladders, no removing sensors from service.
| Channels | 3 independent K-Type thermocouple channels |
| Sensor Type | K-Type thermocouple; three K-Type connectors |
| Optional Probe Range | Up to 260°C (500°F) |
| High-Temp Option | Optional high-temperature K-Type probe up to 1090°C (2000°F) |
| Junction | Built-in hot & cold junction |
| Expandable | Each connector accepts other thermocouple types and ranges on request |
| Type | K-Type thermocouple probe |
| Quantity | Three probes, sold as an add-on |
| Cable | 1 m connection cable, 24 AWG |
| Rated Range | Up to 260°C (500°F) |
| High-Temp Option | Optional high-temperature K-Type probe up to 1090°C (2000°F) |
| Other types | Other thermocouple types and ranges available on request |
| Protocol | Long-range wireless mesh |
| Frequency Bands | 868 MHz / 900 MHz / 2.4 GHz |
| Band class | Sub-GHz (868 / 900 MHz). Sub-gigahertz radio travels farther and penetrates walls and equipment far better than higher-frequency Wi-Fi or Bluetooth |
| Range (line of sight) | Up to 2 miles (on-board antenna) |
| Reliability | Validates & retries lost packets |
| Telemetry | Battery level with every transmission |
| Integration | Open communication protocol |
| Battery | D-cell with Supercap |
| Battery Life | Up to 5 years |
| Power Options | Battery only, or external power connector + battery |
| Mounting | Wall-mount or magnet-mount |
| Enclosure | IP65 rated (main enclosure only) |
| Antenna | On-board |
| Battery-powered model | PR55-19B_BTR |
| External-power model | PR55-19B_PWR |
Anywhere three temperature points need watching on one sensor, from foundries and power plants to food plants, cold storage and building mechanical rooms.
Industrial Boiler TemperatureWatch boiler feed, return and stack on one sensor, in a plant or at a power station, to protect equipment and hold setpoints across the loop.
Oven Temperature MonitoringTrack three zones of a curing oven, foundry furnace or heat-treat line and catch the gap between them before product runs out of spec.
Liquid Temperature MeasurementMeasure hot liquids and process fluids at three depths or three vessels with a probe suited to the job.
Food Storage MonitoringKeep cooking, holding and storage temperatures in range across food plants and cold-chain storage zones.
HVAC High-Side / Low-SideMonitor high-side, low-side and ambient together on one sensor, exactly the points a tech needs to read at once.
Concrete Temperature MonitoringTrack cure temperatures at three depths of a pour with multi-year battery life and no wiring runs.
Plastics Extrusion & MoldingWatch barrel, mold and curing zones where a few degrees of drift turns into scrapped parts.
Chemical Reactors & VesselsTrack reactor, jacket and outlet temperatures at sites spread too far apart to wire.
Oil & Gas Process LinesWatch heated lines and process equipment at field sites without running power or signal wire.
The math is simple. One purchase versus compounding monthly fees, and each sensor covers three points.
Temperature is one reading. These sensors cover the equipment around it and report to the same Atrium gateway.
AC Current MonitorClamp the CT around the heater or burner circuit. When a zone runs cold, current draw shows whether the element is getting power.
Smart Vibration SensorMount it on the blower or circulation fan motor. A failing bearing shows up in vibration weeks before the fan stops moving air.
Pressure and Temperature SensorThread it into the boiler feed or steam line. A failing pump or a clogging filter shows up as a pressure change on the same dashboard.
Answers to the most common questions about 3-channel wireless thermocouple temperature monitoring.
It is a battery-powered industrial sensor from NCD that reads three K-Type thermocouples at once and transmits all three channels wirelessly up to 2 miles line-of-sight. It ships with three K-Type probes rated for measurement up to 260°C (500°F); each channel also accepts a high-temperature probe rated up to 1090°C (2000°F), with other thermocouple types and ranges available on request. It runs on a D-cell with Supercap good for up to 5 years and carries no monthly fees or subscriptions.
Three. The sensor has three independent K-Type thermocouple channels, so a single sensor can read three separate temperature points, three oven zones, both sides of a heat exchanger plus ambient, or top/middle/bottom of a tank, instead of installing three separate sensors.
Probes are an add-on. Choose three K-Type probes in the order options (1 m, 24 AWG cable, rated to 260°C / 500°F), or choose None and connect thermocouples you already have. Built-in hot and cold junctions keep readings accurate either way.
Yes. The sensor has three K-Type connectors, so you can connect your own thermocouples on any channel, including a high-temperature probe rated up to 2000°F or other thermocouple types and ranges for hotter processes. If you don’t have probes yet, add three K-Type probes when you order.
The sensor reaches up to 2 miles line-of-sight with its on-board antenna, over 900MHz long-range wireless mesh networking. Because it forms a self-healing mesh, a single Atrium gateway can collect readings from many sensors across large or multi-building facilities.
The sensor runs on a D-cell with Supercap, and delivers up to 5 years of battery life. An external-power option is also available for permanent installations.
No. The 3-Channel Wireless Thermocouple Sensor has no monthly fees and no proprietary lock-in. You own your data and can keep it on your own network or forward it to AWS, Azure, or any MQTT broker through the Atrium gateway, there are no recurring software costs.
Yes. Readings from all three channels flow through the Atrium gateway, which supports AWS, Azure, MQTT, Modbus, Node-RED, and a REST API. Its open communication protocol makes software integration straightforward, so you can route data into existing CMMS or analytics platforms without vendor lock-in.
The enclosure is wall-mountable, and optional magnetic mounting hardware lets you attach it to metal equipment without tools. The three thermocouple probes are what reach into the temperature points you want to monitor, while the sensor stays in an accessible spot for wireless transmission.
The 3-Channel Industrial IoT Wireless Thermocouple Temperature Sensor is made in the USA and is RoHS compliant. It is built and supported by NCD, a manufacturer trusted by more than 7,000 customers worldwide for industrial wireless sensing.
We publish our prices. There is no quote form, no login and no sales call between you and the number. The Ordering section of the spec table names each version we sell and its part number, so you can match the one you want before you order.
The optional K-Type probes are rated to 260 degrees C (500 degrees F). For hotter work, the optional high-temperature K-Type probe reaches 1,090 degrees C (2,000 degrees F) and fits the same connectors, and other thermocouple types are available on request. Tell us the process and we will confirm the right probe.
Our engineers answer in public on the community forum, and the thread stays up for the next person with the same question.
Ask on the NCD Community ForumOne sensor, three channels, full ownership. Industrial-grade temperature monitoring that pays for itself.
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