Temperature Sensing Components In Stock - Sensors, Probes & Modules

Overview: temperature sensing components available now

Communica stocks a wide range of temperature-sensing components suited to prototyping, education and production support in South Africa. Whether you need analogue thermistors for temperature compensation, RTDs for higher-accuracy measurement, thermocouples for wider ranges, or integrated digital modules (I2C/SPI/1-Wire) for microcontroller projects, finding local stock reduces lead times and simplifies procurement. Check branch collection or wholesale options via our branches and trading hours for quicker pickup.

Common parts in stock typically include NTC thermistors (10k, 100k), PT100/PT1000 RTDs, K-type thermocouples and digital sensors such as the DS18B20, TMP36, and I2C-based temperature/humidity modules. Popular maker brands and suppliers appear across our selection; explore brands and categories to match project needs.

Why buy locally in South Africa?

• Reduced lead time: collect from Samrand, Pretoria CBD or Cape Town branches and avoid extended imports.
• VAT-ready invoices: suitable for education departments and company procurement.
• Support and compatibility advice from technicians familiar with local use cases.

Quick compatibility guide

Match sensor type to application: use thermistors for low-cost temperature sensing around ambient, RTDs for higher-accuracy applications (industrial lab or HVAC), thermocouples for high temperatures, and digital modules for easy integration with microcontrollers. For browsing parts by category, see our collections page.

Explore Collections to filter by sensors, modules and test equipment. For brand-specific searches, visit our shop by brand listing to find maker-friendly modules and known component manufacturers.

Stock types and typical specs table

For browsing all products and to see current stock listings, use the all products index which lists available items and real-time stock indications across branches.

Note: stock levels fluctuate. If you need larger quantities for a class or production run, request a quote or check branch availability to confirm lead times and bulk pricing.

Learn more about Communica's history and service model on the About Us page to understand our nationwide branch and distribution footprint.

About Communica

Selection criteria, wiring, and integration guidance

Choose sensors based on accuracy, response time, temperature range, interface and environmental robustness. Budget and calibration needs also matter: low-cost thermistors can be fine for classroom projects, while RTDs are better for precise measurement in lab or industrial contexts.

Basic formulas and wiring examples

Ohm's law and power calculations help when using resistive sensors (thermistors, RTDs). Use these formulas:

• V = I × R
• P = V × I = I^2 × R = V^2 / R

Example: measuring a 10k NTC with a 3.3V ADC using a voltage divider. Choose a series resistor near the nominal thermistor resistance for best resolution around room temperature.

   3.3V
    |
   [Rseries]
    |
   +-----> ADC input
    |
   [Thermistor]
    |
   GND

For thermocouples, always use a proper cold-junction compensation amplifier (e.g., MAX31855 or similar) rather than connecting directly to an ADC. For digital sensors such as DS18B20, use the one-wire bus with a pull-up resistor (4.7k typical).

Examples and South Africa scenarios

Student project: a Raspberry Pi greenhouse monitor using a DS18B20 and DHT22 for temperature and humidity logging. Local stock often includes Raspberry Pi-compatible modules and sensors; search the shop by brand page to find compatible maker modules.

Shop by Brand to pair boards and sensors correctly.

Lab/procurement case: procurement teams can request formal quotes for bulk RTDs or thermocouple assemblies. Use branch pickup from Samrand for faster fulfilment or request stock confirmation across branches before raising a PO.

Branches & Trading Hours lists locations and collection options for quicker delivery.

Accessories, calibration and troubleshooting

• Accessories: probe housings, waterproof assemblies, terminal blocks and extension cable for thermocouples and RTDs.
• Calibration: compare against a calibrated thermometer or use a reference bath for best results; calibration services may be available locally.
• Troubleshooting: check wiring polarity for thermocouples, ensure pull-ups for 1-Wire sensors, and validate amplifier grounds for low-noise readings.

If you want to see current stock across all sensor categories, visit the all products index to filter by temperature sensors and related accessories. For hands-on purchases, choose branch collection or request a quote for bulk orders.

Browse all products

Sources

• Communica - About Us
• Communica - Branches & Trading Hours
• Communica - Collections (Shop by Category)
• Thermistor overview - Adafruit