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Digital Temperature Cable (DTC)

Product Highlights
  • Digital thermistor string with up to 125 sensors.
  • Custom comes standard, put sensors where you want them, vary every sensor spacing if you want.
  • Plug & Play with more connectivity devices.
  • Resilient and repairable, just three conductors.
  • Go the distance, up to 750m (2460 feet), call for longer configurations.


beadedstream Digital Temperature Cables (DTC)s increase the speed and ease of obtaining temperature data for your environmental or infrastructure application. The thermistor cable interface directly with beadedstream’s ultra-low power temperature data loggers. Since our thermistor strings are fully digital, connecting to most data loggers or existing networks is easy using our low-cost interface.


Get accurate, highly resolved measurements for air, soil, or water temperature. Down a hole, on a mountainside, under a road, through a dam, in a lake, use beadedstream cables wherever you need reliable temperature measurement.


Polyurethane cable jacket stays flexible below -40 C/F ensuring handling in arctic conditions will not damage cable.

1-wire technology permits up to 125 sensors per single cable while remaining lightweight for field technicians.

Integrated aramid fiber increases torsional strength far beyond copper wiring and urethane jacket for extended product life and reduced long-term cost.

All-digital temperature conversion occurs at the sensor for better accuracy on your mission critical projects.

Common 1-wire signal conversion adapts easily to other communication protocols (RS232, TTL, RS485, etc) for easy integration with logger installations.

Small 11mm diameter sensor molds are robust and flexible, molded in low profile, corrosion resistant polyurethane for easy handling and extended product life.


Custom Length

● Up to 750 m (2460 ft) (call if your application is longer)

Custom Sensor Options

● Up to 125 sensors

● Made to order sensor placements. Unlimited spacing options

● Standard minimum spacing 10 cm (4 in)

● Closer spacing available (please inquire)

Sensor Range

-55°C to +125°C (-67°F to +257°F)

Sensor Accuracy

±0.1°C from -10°C to 30°C (14°F to 86°F)

Sensor Resolution


Outer Jacket & Node Construction

Low-temperature flexibility polyurethane jacket

Optional armored feature for proven resistance to wildlife

UV stabilized. Cut and abrasion resistant



High-vis yellow (standard), white (optional), or gray (armored)

DTC Diameter

Sensor cable = 7.0 mm (0.28-inch)

Sensor nodes = 11.0 mm (0.44-inch)

DTC diameter does not change with the number of sensors

Tensile Load Member

250 lb (113.4 kg) tensile strength with straight-laid aramid fibers built-in

Termination Options

4-pin Raymo Connector

3-4 bare leads for terminal blocks (e.g. 3rd party data loggers)


Armored cables are typically used for exposed surface leads to protect against animals chewing through cables. However, it’s important to note that armored cables do not protect against equipment damaging the cable.

For busy construction sites with heavy equipment, conduit is recommended for surface leads to prevent equipment damage. Additionally, conduit is recommended for in-ground sections to protect against ground movements such as heave from freeze/thaw cycles or settlement. 

Read this article to learn more about why we recommend the use of conduit and some conduit options.

Yes, for above-ground conduit, it’s important to use Flexible Conduit instead of PEX (polyethylene) as PEX can be damaged by UV rays. For deeper installations with higher water pressures, Stainless Steel Conduit is recommended. Our digital temperature cable has a 3.5 MPa or 500 psi fluid pressure rating, ensuring reliability in various environments.

Read this article to learn more about why we recommend the use of conduit and some conduit options.

No, the sensor spacing in the digital temperature cable does not need to be uniform. It can vary from the minimum spacing to whatever spacing is desired or required based on the application.

The maximum number of sensors per logger or per cable is 125. Whether you have one logger connected to a cable or multiple cables connected to a logger, the maximum remains 125 sensors.

Yes, third-party loggers can be used via protocols such as SDI-12 and RS-485. These connections can be integrated into the Recite or MLink device for seamless data collection.

Yes, if a cable gets damaged, it is easy to splice back together as it consists of just three conductors. Additionally, if cable extension is needed, we can provide extension pieces with connectors on each end for convenience.

Yes, we offer pigtail adapters that can be used to connect cables with different connectors, such as XLR and Raymo connectors, making them interchangeable.

Yes, we offer white cables for snow applications and heat shrink for water applications, which helps prevent biofouling.

The cable can be installed horizontally, vertically, or inclined, and it can be placed in boreholes, buried in the ground, or submerged in water.

Yes, our digital temperature cable can be used for river monitoring. We pre-install sand into the PEX conduit, ensuring the cable remains submerged, is protected from debris, and performs optimally in river environments.

Yes, each cable undergoes calibration in an ice bath before it is shipped out, ensuring accurate temperature readings upon installation.

We recommend calibrating the cable every two years if it’s feasible to send it back to our shop.

An “85 degC” displayed on a sensor indicates that the sensor doesn’t have enough power to function properly. This typically translates to an error code equivalent in Fahrenheit. In such cases, a strong pull-up command can be used in the logger to take a reading from the sensor. Please contact our team if you need support.

A “99 degC” error on a single sensor indicates an issue with that specific sensor. However, if multiple sensors display “99 degC” errors, it could be a sign of a cable issue. Please contact our team if you need support.

Yes, aside from “85 degC” and “99 degC” errors, you may encounter “125 degC” and “901” errors. The “125 degC” error, with a temperature of Celsius plus or minus a couple of degrees, has an equivalent in Fahrenheit. The “901” error, known as billiard balling, occurs when there’s a discrepancy in the number of sensors detected, often requiring further investigation. If you encounter any of these error codes, it’s advisable to reach out to us for assistance.

Each cable comes with a unique serial number prominently displayed on the cable label. This allows for easy identification, ensuring you know exactly which equipment you have.

Yes, you can connect old cables to new loggers and new cables to old loggers. Our systems are designed to be compatible across different versions, ensuring flexibility and ease of use for our customers. You may require a pigtail if the cable and logger doesn’t have the same connector type.