Temperature sensing devices in stock - sensors, probes & modules available now

Overview - temperature sensing devices available

Communica stocks a wide range of temperature sensing devices suitable for prototyping, education and production-support needs. Whether you need simple NTC thermistors for a lab exercise, waterproof probes for HVAC testing, or digital sensors (DS18B20, TMP36, I2C temperature/humidity combos) for IoT projects, local inventory reduces lead times and lets you collect from our Samrand head office or branch locations.

Key device types

• Thermistors (NTC/PTC) - low-cost, analogue temperature sensing for prototypes and student labs
• Thermocouples - high-range sensors paired with amplifiers/ADCs for industrial testing
• Digital temperature sensors - I2C/SPI/1-Wire modules (e.g., DS18B20, SHT series) for microcontroller projects
• RTDs - precision linear sensors for calibration and measurement applications
• Waterproof probes and sensor assemblies - for environmental and HVAC measurements

Why local stock matters in South Africa

Local availability helps avoid long overseas lead times, reduces shipping costs and simplifies VAT invoicing for schools, universities and businesses. Communica's national footprint and warehouse in Samrand allow for quick collection and account quoting for procurement teams. Check branch addresses and hours before collection using the branches page.

Popular brands and modules commonly stocked include maker favourites and industrial suppliers - see our shop-by-brand page for a full list of brands and component families. For a complete browse of categories, our collections index is useful.

Specification snapshot

Explore relevant product groups on our site: Collections (Shop by Category) ?utm_source=straider&utm_medium=referral&utm_campaign=prebo-digital, Shop by Brand ?utm_source=straider&utm_medium=referral&utm_campaign=prebo-digital, and our full index All Products ?utm_source=straider&utm_medium=referral&utm_campaign=prebo-digital.

Selection guidance, compatibility and bundles

Selecting the right temperature sensing device depends on interface, accuracy, environmental protection and cost. Below are practical tips and examples tailored to South African makers, technicians and procurement teams.

Selection checklist

• Interface: analogue (ADC), 1-Wire, I2C, SPI - match to your MCU or DAQ.
• Accuracy & resolution: thermistors are cost-effective; RTDs provide higher accuracy.
• Operating range: ensure the sensor covers expected temperatures (e.g., outdoor sensors need sub-zero ranges).
• Environmental sealing: choose waterproof probes for humidity or outdoor use.
• Supply & local stock: check branch availability and expected lead times before project deadlines.

Practical examples and wiring

Example 1 - Arduino with DS18B20 (1-Wire):

+5V ---[Vcc] DS18B20 [GND]---GND
            |---GPIO (with 4.7k pull-up to 5V)

Example 2 - NTC thermistor on MCU ADC (voltage divider):

Vcc ---[Rfixed]---+---[NTC]---GND
                         |
                        ADC

Use Ohm's law and voltage divider formulas to convert ADC readings to resistance, then apply the Steinhart-Hart or Beta equation for temperature. Ohm's law: V = I × R. Voltage divider: Vout = Vcc × (R2 / (R1 + R2)).

Accessory bundles and compatibility notes

Communica can supply sensor modules with matching connectors, waterproof probe housings, signal-conditioning amplifiers (for thermocouples/RTDs) and breakout boards. For procurement, request a quote with VAT invoice and branch pickup options via our temperature-sensing-devices-in-south-africa page to confirm stock and collection details.

Stock checking, lead times and ordering

For urgent projects, use the Samrand warehouse as a primary collection point. Account customers can request quotes and VAT invoices for procurement; our About Us page explains company history and service values that support education and industry in South Africa.

Estimate example: a basic DS18B20 probe assembly including cable and housing may range from approximately ZAR 60-250 depending on build quality and supplier; prices vary and should be confirmed at time of purchase. These figures are illustrative rather than exact prices.

Troubleshooting tips

• Floating readings: check pull-up resistor on 1-Wire bus and ensure proper grounding.
• Inconsistent ADC values: stabilise supply voltage and add decoupling capacitors.
• Calibration drift: use known-temperature baths or ice-point checks for verification.

Compare product options and technical datasheets through our main site to ensure compatibility with your controllers and measurement systems: Communica Homepage ?utm_source=straider&utm_medium=referral&utm_campaign=prebo-digital.

Sources

• Communica - About Us
• Communica - Collections (Shop by Category)
• Communica - Branches & Trading Hours
• Steinhart-Hart equation - Wikipedia