The temperature sensor market in India has grown rapidly alongside the boom in IoT, industrial automation, and smart manufacturing. Whether you're a student prototyping on an Arduino or a plant engineer sourcing sensors for a production line, understanding the temperature sensor price in India is the first step to making a cost-effective decision — without overpaying for specs you don't need.
Prices vary widely — from as low as ₹54 for a basic DHT11 module to over ₹1,000 for industrial-grade PT100 RTDs and K-type thermocouples. The gap reflects real differences in technology, accuracy, and application. India's electronics components market is also increasingly competitive, with specialist platforms like Robu.in and Robocraze offering significantly better pricing than general marketplaces. This guide is built on verified pricing from Robu.in, Robocraze, and IndiaMART, cross-referenced across sensor types. It's designed for:
- Engineering students and hobbyists building Arduino or Raspberry Pi projects
- IoT developers selecting sensors for prototypes and production builds
- Procurement and maintenance engineers sourcing industrial sensors in India
- Small manufacturers comparing sensor options before committing to a supplier
This guide covers six of the most widely used temperature sensors available in India — DHT11, LM35, NTC Thermistor, PT100 RTD, MLX90614, and K-Type Thermocouple — comparing their prices, accuracy, and best use cases, because the right sensor isn't always the cheapest one. Read on to find the one that actually fits your project.
Table of Contents
- Why Temperature Sensor Prices Vary So Much in India
- The Most Common Temperature Sensors and What They Cost
- DHT11 vs LM35 — Which Budget Sensor Should You Pick?
- When Does It Make Sense to Spend More?
- Price Comparison Table: All Sensors at a Glance
- Where to Buy Temperature Sensors in India Without Getting Overcharged
- Conclusion: Match the Sensor to the Job, Not Just the Price
Why Temperature Sensor Prices Vary So Much in India
Browse Robu.in for five minutes — a DHT11 module sits at around ₹54, while a PT100 RTD starts from ₹375 and climbs past ₹950 depending on specs. Same category, very different price. A few things are always driving that gap.
1. Technology inside the sensor. A DHT11 uses a basic capacitive humidity element paired with a simple thermistor — cheap to make, cheap to buy. An MLX90614 infrared sensor contains a precision thermopile chip that reads temperature without touching the surface at all. That non-contact capability doesn't come free.
2. Accuracy tolerance. A basic NTC thermistor is accurate to around ±1°C — perfectly fine for a home automation project. A calibrated PT100 RTD can hit ±0.1°C. That gap sounds small, but in pharmaceutical cold storage or food processing, it's the difference between passing a compliance audit and failing one.
3. Where it's made. Most budget sensors — DHT11, LM35, basic NTC thermistors — are manufactured in China and imported in bulk. By the time they clear customs, absorb 18% GST, and pass through Amazon.in or Flipkart, costs add up fast. Industrial sensors from European or Japanese manufacturers carry even steeper import and certification costs.
Worth knowing: Specialist platforms like Robu.in, Evelta, and Robocraze often price sensors lower than Amazon — especially when buying more than 10 units. IndiaMART is worth checking for industrial-grade sensors if you're sourcing in bulk directly from manufacturers.
The Most Common Temperature Sensors and What They Cost
From a ₹54 DHT11 to a ₹950 PT100 — here's what's actually available in India, what each one does, and where it makes sense.
DHT11 — The Starter Sensor
Walk into any electronics meetup in Bangalore or Delhi. Chances are, half the projects on the table are running a DHT11.
It measures both temperature and humidity. One module. One data pin. Works straight out of the box with Arduino.
Accuracy is ±2°C — not great, but good enough for a weather station or a smart home display.
Price: ₹54 – ₹80 across Robocraze, Robu.in, and Amazon.in.
LM35 — Simple, Reliable, Analog
Three pins. No library. No fuss.
LM35 outputs 10mV for every 1°C — plug it into any Arduino analog pin and you're reading temperature in minutes. Accuracy sits at ±0.5°C, a clear step up from DHT11 for temperature-only use.
Price: ₹100 – ₹139 on Robu.in. Bare IC available cheaper on IndiaMART for bulk orders.
NTC Thermistor — Cheap and Everywhere
You've used one without knowing it. Your geyser, your air conditioner, your refrigerator — all likely running an NTC thermistor inside.
It's a passive resistor that changes value with temperature. No power-hungry circuitry. Just resistance.
Accuracy is around ±1°C. Good enough for appliances and HVAC. Not suitable for precision lab work.
Price: ₹60 – ₹500 depending on probe type, cable length, and waterproofing.
PT100 RTD — When Accuracy Actually Matters
A PT100 is a platinum wire wound to exactly 100Ω at 0°C. As temperature rises, resistance rises predictably.
Accuracy: ±0.1°C for Class A. That's the kind of precision pharmaceutical plants, food processors, and industrial furnaces depend on.
Price: ₹375 – ₹950 retail. Industrial variants with thermowell and head-type housing go higher.
MLX90614 — No Contact, No Problem
Point it at something. Get the temperature. Done.
The MLX90614 detects infrared radiation emitted by objects — no physical contact needed. It became widely known during COVID-19 when non-contact thermometers flooded the market. Most of them ran on this chip.
Accuracy: ±0.5°C. Measures object temperatures from -70°C to 380°C.
Price: ₹600 – ₹820 on Robocraze and Robokits. IndiaMART suppliers quote from ₹600 for bulk.
K-Type Thermocouple — Built for Heat
When the temperature hits 400°C, 600°C, or beyond — this is the sensor that stays in the game.
K-type thermocouples are made from two dissimilar metals (chromel and alumel) that generate a small voltage as temperature changes. Simple, rugged, and reliable in extreme environments.
Accuracy: ±2.5°C. Not the most precise, but built for ranges no other low-cost sensor can handle.
Price: ₹300 – ₹1,159 depending on probe length, sheath material, and connector type.
The table below puts all six sensors side by side for a quick comparison.
| Sensor | Type | Accuracy | India Price Range | Best For |
|---|---|---|---|---|
| DHT11 | Digital (temp + humidity) | ±2°C | ₹54 – ₹80 | Student projects, basic IoT |
| LM35 | Analog IC | ±0.5°C | ₹100 – ₹139 | Arduino projects, ambient sensing |
| NTC Thermistor | Passive resistive | ±1°C | ₹60 – ₹500 | Appliances, HVAC, DIY |
| PT100 RTD | Resistance (RTD) | ±0.1°C | ₹375 – ₹950 | Industrial process control |
| MLX90614 | Infrared (non-contact) | ±0.5°C | ₹600 – ₹820 | Body temp, moving objects |
| K-Type Thermocouple | Thermocouple | ±2.5°C | ₹300 – ₹1,159 | High-temp industrial use |
* Prices are retail references from Robu.in, Robocraze, and IndiaMART. Bulk or direct manufacturer orders will typically cost less.
DHT11 vs LM35 — Which Budget Sensor Should You Pick?
Both are cheap. Both work with Arduino. But choosing the wrong one wastes time — and sometimes the whole project.
What DHT11 Does Well
DHT11 handles both in a single ₹60 module. One wire. One library. Done in an afternoon.
For projects where humidity matters, DHT11 is genuinely hard to beat at this price.
Where DHT11 Falls Short
Accuracy is ±2°C. For reading room temperature, that's fine.
For a temperature controller — say, maintaining a fermentation chamber at exactly 28°C — that ±2°C swing becomes a real problem.
It also refreshes only once every 2 seconds. Fast-moving thermal events will slip right past it.
What LM35 Does Better
LM35 gives her ±0.5°C accuracy — four times better than DHT11 for temperature alone. No library needed. Just a direct analog read from any Arduino ADC pin.
The output is 10mV per °C. Clean, linear, predictable.
LM35 works well for: Temperature controllers, analog circuits, precision sensing, projects where humidity data isn't needed.
The Honest Verdict
One question decides it:
Do you need humidity data?
Yes → DHT11. No → LM35.
Both sensors cost under ₹150. The right choice isn't about price — it's about what your project actually needs.
| DHT11 | LM35 | |
|---|---|---|
| Measures Humidity | ✓ Yes | ✗ No |
| Temperature Accuracy | ±2°C | ±0.5°C |
| Output Type | Digital | Analog |
| Library Required | Yes | No |
| Refresh Rate | Every 2 seconds | Continuous |
| India Price | ₹54 – ₹80 | ₹100 – ₹139 |
Still unsure which sensor fits your project? The next section covers when it makes sense to move beyond budget sensors entirely.
When Does It Make Sense to Spend More?
A ₹60 DHT11 is perfect — until it isn't. Here's how to know when a budget sensor stops being enough.
PT100 / RTD — When Precision Is Non-Negotiable
Imagine a pharmaceutical cold storage unit in Mumbai. The medicine inside must stay between 2°C and 8°C. A ±2°C sensor doesn't just underperform here — it's a compliance liability.
PT100 RTD sensors are built for exactly this. Class A accuracy hits ±0.1°C. Stable, repeatable, and trusted by industrial certifications worldwide.
They're also the right call for:
— Motor winding temperature monitoring
— Food processing lines
— HVAC systems requiring precise zone control
— Any application where a wrong reading has real consequences
India price: ₹375 – ₹950 retail. Worth every rupee when accuracy is the requirement.
MLX90614 — When You Can't Touch What You're Measuring
A rotating motor shaft. A hot PCB trace. A person walking through an entry gate.
These are situations where contact sensors simply don't work.
MLX90614 reads infrared radiation — the heat naturally emitted by any object. Point it at a surface. Get the temperature. No probes, no wires, no contact needed.
During COVID-19, this was the chip inside nearly every non-contact thermometer at Indian airports and hospitals. It became the go-to for body temperature screening precisely because it worked fast, accurately, and without touching anyone.
India price: ₹600 – ₹820. A significant jump from DHT11 — but for non-contact applications, there's no cheaper alternative that works as well.
K-Type Thermocouple — When the Heat Is Extreme
At 400°C, a DHT11 would melt. An LM35 would be long gone. Even a PT100 starts approaching its limits.
K-type thermocouples are made from chromel and alumel — two metals that generate a measurable voltage difference as temperatures climb. They operate reliably up to 1,250°C.
Foundries, kilns, industrial furnaces, induction heating systems — this is their world.
India price: ₹300 – ₹1,159 depending on probe length and sheath material. Require a thermocouple amplifier (like MAX6675 or MAX31855) to interface with a microcontroller.
Price Comparison Table: All Sensors at a Glance
Before buying, it helps to see everything side by side — price, accuracy, range, and the right use case in one place.
| Sensor | Price (India) | Accuracy | Temp Range | Interface | Best Use Case |
|---|---|---|---|---|---|
| DHT11 | ₹54 – ₹80 | ±2°C | 0 – 50°C | Digital | IoT, weather stations, student projects |
| LM35 | ₹100 – ₹139 | ±0.5°C | -55 – 150°C | Analog | Arduino projects, ambient sensing |
| NTC Thermistor | ₹60 – ₹500 | ±1°C | -40 – 125°C | Analog (resistive) | Appliances, HVAC, DIY builds |
| PT100 RTD | ₹375 – ₹950 | ±0.1°C | -200 – 450°C | RTD module / transmitter | Industrial process, pharma, food |
| MLX90614 | ₹600 – ₹820 | ±0.5°C | -70 – 380°C | I2C | Non-contact, body temp, moving parts |
| K-Type Thermocouple | ₹300 – ₹1,159 | ±2.5°C | 0 – 1,250°C | Amplifier required | Furnaces, kilns, high-heat industrial |
Prices referenced from Robu.in, Robocraze, and IndiaMART. Bulk procurement from manufacturers will typically cost less. Prices are subject to change.
Where to Buy Temperature Sensors in India Without Getting Overcharged
The same sensor can have three different prices on three different platforms. Here's where to look — and what to watch out for.
For Hobbyists and Students
Robu.in — Consistent pricing, good stock levels, fast dispatch from Navi Mumbai. Solid for DHT11, LM35, NTC modules.
Robocraze — Bangalore-based, reliable for same-day dispatch within Karnataka. Often runs discounts on popular sensors.
Evelta — Smaller catalogue but good quality control. Worth checking for LM35 and analog sensors.
For Industrial or Bulk Orders
IndiaMART — The right place when buying PT100, K-type thermocouples, or any industrial-grade sensor in quantity. Prices listed are typically negotiable. Always verify the supplier's GST registration and ask for a sample before committing to large orders.
Direct from manufacturers — Cities like Pune, Ahmedabad, and Chennai have established sensor manufacturers. For volumes above 50–100 units, approaching them directly often cuts costs significantly.
When Amazon.in Actually Makes Sense
For one-off purchases with Prime delivery, Amazon works fine. But the pricing on sensors is inconsistent — the same DHT11 module can range from ₹65 to ₹199 depending on the seller.
Always check reviews and seller ratings. Counterfeit or substandard sensors do show up, particularly for LM35 and MLX90614.
Conclusion: Match the Sensor to the Job, Not Just the Price
Temperature sensors in India range from ₹54 to well over ₹1,000 — and every price point exists for a reason.
A DHT11 is the right answer for a college project. A PT100 is the right answer for a pharmaceutical plant. Buying the wrong one — in either direction — costs more in the long run.
The question to ask before buying isn't "what's cheapest?" It's "what does my application actually need?"
Accuracy requirement, temperature range, contact vs. non-contact, analog vs. digital output — get those four things clear, and the right sensor picks itself.
Budget + humidity needed → DHT11
Budget + temperature only → LM35
Appliances / HVAC → NTC Thermistor
Industrial precision → PT100 RTD
Non-contact → MLX90614
Extreme heat → K-Type Thermocouple
Still not sure which sensor is right for your project? Drop your requirements below — we're happy to help you choose.
