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Order temperature sensors and switches from Communica-local stock, branch pickup, technical guidance and account quoting for makers, students and procurement.
Order sensors with branch collection from Samrand, Pretoria or Cape Town.
Compare range, accuracy, wiring and switching ratings before ordering.
VAT invoices, quotes and account ordering for schools and procurement teams.
Need to order temperature sensors and switches for a project, lab or production run? Communica stocks thermistors, RTDs, NTC/PTC sensors, digital temperature sensors (e.g., DS18B20, TMP36 equivalents), mechanical thermostats and electronic temperature switches suitable for prototyping, education and light industrial use. We focus on local availability, fast branch pickup and clear spec guidance so South African makers, students and engineers can select components with confidence.
Before ordering, identify the sensor type and its intended measurement method: contact thermistors/RTDs for surface or immersed sensing; thermocouples for wide temperature ranges; and digital IC sensors for easy microcontroller interfacing. For over-temperature protection use bimetallic or electronic temperature switches rated for the desired trip point and load.
For a quick browse of available categories see Collections (Shop by Category). Learn about Communica, our history and branch footprint at About Us.
| Type | Typical range | Use cases |
|---|---|---|
| NTC Thermistor | -40°C to 125°C (varies) | Temperature sensing on PCBs, consumer devices, education labs |
| RTD (PT100/RTD) | -200°C to 850°C (depending on type) | Higher accuracy lab/industrial measurements |
| Thermocouple | -200°C to 1700°C (type-dependent) | Furnaces, kilns, high-temp processes |
| Digital IC (I2C/1-Wire) | -55°C to 125°C typical | Microcontroller projects, data logging, IoT |
| Mechanical temperature switch | Device dependent | Over-temperature cutouts, fan control |
When you order temperature sensors and switches, check compatibility with your controller or measurement system. For makers using Raspberry Pi or Arduino platforms explore compatible sensor modules in the temperature sensors for Raspberry Pi projects listings for familiar maker-friendly boards and accessories.
Key specs to review before ordering: temperature range, accuracy (±°C), response time, output type (analogue resistance/voltage, thermocouple mV, digital interface), wiring (2/3/4-wire for RTDs) and maximum switching current for thermostats. For procurement, include lead time, MOQ and whether VAT invoices are provided - Communica supports account quoting and institutional invoicing for education and industry customers; see branch and collection options at Branches & Trading Hours.
Ohm-based sensors: use Ohm’s law for simple series measurements and to size pull-up resistors where needed. Example formula for voltage across a thermistor in a divider:
Vout = Vs * (R_thermistor / (R_fixed + R_thermistor))
RTD three-wire wiring (ASCII diagram):
MCU/ADC ---- Rlead1\
|------[RTD]------|---- Rlead2 ---- GND
Rlead3/compensation
Digital sensor example: DS18B20-style sensors connect to a single data line with a pull-up resistor; they are widely compatible with Arduino and Raspberry Pi software libraries for quick integration.
Stock levels in South Africa can vary by brand and model. Popular maker-friendly brands and product families are typically available through Communica, but for larger orders or specialised RTDs/thermocouples plan for lead times - request a quote or stock check using account services. Use the Communica homepage to begin shopping or check product breadth at Communica homepage and browse all products at All Products.
Ordering tips: for classroom kits order small batches of digital sensors and thermistors for easy student experiments; for pilot production verify mechanical mounting, cable lengths and switching ratings for thermostats. Prices shown on product pages are in ZAR and may vary; ask for a formal quote when purchasing for institutional budgets.
Ready to order? Use these actions: Shop Now to view current stock, Check Stock in Samrand for branch pickup, Compare Specs across sensor families, or Request a Quote for bulk/institutional purchases through Communica's account services.
Communica supplies semiconductors and electronic components to industries such as automotive, electrical, automation, mining, and education.
Disclaimer: This content is for educational purposes only. Product availability, pricing, and specifications are subject to change. Always verify current details on the retailer's website before making a purchase. We may earn affiliate commissions from qualifying purchases.
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