---
product_id: 83564117
title: "DS18B20 Temperature Sensor"
brand: "gikfun"
price: "$39.91"
currency: USD
in_stock: true
reviews_count: 10
category: "Gikfun"
url: https://www.desertcart.ec/products/83564117-ds18b20-temperature-sensor
store_origin: EC
region: Ecuador
---

# 3.0-5.5V power range Waterproof probe design 1 meter cable length DS18B20 Temperature Sensor

**Brand:** gikfun
**Price:** $39.91
**Availability:** ✅ In Stock

## Summary

> 🌡️ Stay ahead of the curve with precision you can trust!

## Quick Answers

- **What is this?** DS18B20 Temperature Sensor by gikfun
- **How much does it cost?** $39.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/83564117-ds18b20-temperature-sensor)

## Best For

- gikfun enthusiasts

## Why This Product

- Trusted gikfun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Multi-Sensor Pack:** Five sensors included for scalable projects or multi-point temperature monitoring.
- • **Accurate & Consistent:** High-quality DS18B20 chip delivers ±0.5°C accuracy with minimal variance across units.
- • **Plug & Play Precision:** Seamlessly integrates with Arduino and PIC32 for instant thermal data.
- • **Versatile Application:** Perfect for thermostatic controls, aquariums, industrial systems, and DIY smart home setups.
- • **Reliable Waterproof Build:** Durable metal probe with weatherproof cable ensures long-term outdoor and industrial use.

## Overview

The Gikfun 5PCS DS18B20 Waterproof Digital Thermal Probe Sensors offer professional-grade temperature sensing with a 1-meter cable and a wide 3.0-5.5V power range. Designed for Arduino and similar microcontrollers, these probes deliver reliable, accurate readings in harsh environments thanks to their waterproof metal casing and robust build. Ideal for industrial, consumer, and experimental applications, this pack of five sensors enables scalable, multi-point temperature monitoring with consistent performance.

## Description

Buy Gikfun 5PCS 1M DS18B20 Temperature Sensor Waterproof Digital Thermal Probe Sensor for Arduino EK1083: Temperature Probes & Sensors - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Easy to use, usually reliable - We have been using these to monitor and control experimental aquaria. Several of these sensors hung in salt water for several months with no problems. There is just one negative - sometimes there are spurious readings of -127C (probably what you get when the value overflows or the bits are all zeros). I don't think this is exactly a malfunction, because it is probably caused by electromagnetic fields or current leakage from other equipment. Still, it would be nice to have a way to prevent this. Other researchers have seen the same thing. [see edit at the end] Still, we are sticking with these sensors. They are reasonably priced, and seem to have no other problems. If there are a lot of bad values we find the problem equipment and remove it. Otherwise we just have the Arduino sketch ignore the -127 C value and use the most recent reasonable one. Update for geeks only: we are up to 12 of these in use now, some for about 8 months. I did a calibration test with all 12 in the same insulated container of water at about 20 degrees C. The standard deviation among the sensors was 0.11 degrees. Three expensive HOBO loggers had a lower standard deviation (0.03) and indicated 0.35 degrees warmer, but I don't have any evidence that the HOBOs are actually more accurate. At 36 C, the standard deviation for the Gikfun sensors was up to 0.17, but I can't quote a temperature difference because the HOBO logger are very slow and the water was cooling enough to make the HOBO values unreliable. Edit, June 2019. I found the source of most of our sensor errors. We are powering our Arduinos with a 12 V power supply which is apparently very noisy. The Arduino itself tolerates this perfectly, we the problem wasn't obvious. Just putting a big capacitor across the 12 V wires before they go into the Arduino made the errors go away. A proper filter with optimal capacitors and an inductor would be even better.
Review: Professional fit and finish! Perfect 1/4" probe fits into an RO T fitting. Accuate! - These will super glue into any Tee connector with the right glue. Using Starbond Toughened Medium Thick CA. The super glue isn't needed for low pressure, but once over 20psi, I had to glue it in as it is installed in a system at 65psi. Temperature is accurate, though a little slow in responding. The whole metal sleeve needs to get to temp, or more than the 1/8" I have in the water stream, so it lags the water temperature by about 3-5 degrees, but once taken into account, or at temperature for a period of time, the temperature matches other thermometers including a Fluke thermocouple to within 1°F. The downside is conversion takes 1/8 second to 7/8 second depending on resolution. 10 bit is best, as 8 bit microcontrollers aren't so accurate beyond that unless in a critical application. This is due to the Dallas OneWire sensor and not the probe or cable attached to it. They are VERY high quality and professional supple cable with strain relieved weatherproof end at metal probe side. I crimped JST connectors to the wires simply for portability as I glued a few into Tees for RO monitoring, the lack of a connector is a bonus as it allows you to use what is needed. Out of box the wires are tinned and stiff enough to plug directly into a breadboard for a microcontroller. Using with both a PIC32 and Arduino and having zero issues.

## Features

- Power supply range: 3.0v to 5.5v. length:Approx.100 cm, Pack of 5pcs.
- Output lead:red (VCC), yellow(DATA) , black(GND)
- Warm Tips: Using a 4.7K resistor between the Data and VCC will make the testing of the probe easilier.
- No other components, unique single bus interface
- Widely applications: thermostatic controls, industrial systems, consumer products, thermometers, any thermally sensitive system, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B012C597T0 |
| Age Range (Description) | Adult |
| Best Sellers Rank | #65,709 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #105 in Temperature Probes & Sensors |
| Brand | Gikfun |
| Color | Black |
| Connectivity Technology | Usb |
| Date First Available | November 27, 2014 |
| Display Type | Digital |
| Immersion Depth | 100 Centimeters |
| Included Components | 5x DS18B20 Temperature Sensor, Waterproof Digital Thermal Probe, Adapter Module for Arduino |
| Indoor/Outdoor Usage | Outdoor |
| Is Discontinued By Manufacturer | No |
| Item Length | 100 Centimeters |
| Item Weight | 2.4 ounces |
| Item model number | LYSB00Q9YBIJI-ELECTRNCS |
| Manufacturer | Esooho |
| Model Name | Gikfun DS18B20 |
| Outer Material | Plastic |
| Power Source | DC Power Supply |
| Product Care Instructions | Wipe Clean |
| Response Time | 500 Milliseconds |
| Reusability | Rechargeable |
| Special Feature | Waterproof |
| Specification Met | Yes |
| Style | Probe |
| UPC | 707948005660 703510988669 |
| Unit Count | 3.0 Count |
| Upper Temperature Rating | 125 Degrees Celsius |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Gikfun
- **Color:** Black
- **Connectivity Technology:** Usb
- **Display Type:** Digital
- **Included Components:** 5x DS18B20 Temperature Sensor, Waterproof Digital Thermal Probe, Adapter Module for Arduino
- **Outer Material:** Plastic
- **Product Care Instructions:** Wipe Clean
- **Special Feature:** Waterproof
- **Specification Met:** Yes

## Images

![DS18B20 Temperature Sensor - Image 1](https://m.media-amazon.com/images/I/61tyYgfKcrS.jpg)

## Questions & Answers

**Q: What is the diameter of the stainless probe?**
A: My dig caliper says 5.95mm diameter for metal probe, slighly bigger for the rubber/heat shrink above it.

**Q: What is the output voltage range?**
A: There is no output voltage as these are thermometers and not probes. Respectively you can plug them into both 5.5v and 3v.

**Q: What are the maximum and minimum operational temperatures for this product?**
A: The interweb says Wide temperature range of -55 ℃ ~ +125 ℃  I am not sure I would test those extremes

**Q: Has anyone tried using these with a PLC?**
A: No it did not with the one I purchased.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to use, usually reliable
*by S***Y on December 16, 2018*

We have been using these to monitor and control experimental aquaria. Several of these sensors hung in salt water for several months with no problems. There is just one negative - sometimes there are spurious readings of -127C (probably what you get when the value overflows or the bits are all zeros). I don't think this is exactly a malfunction, because it is probably caused by electromagnetic fields or current leakage from other equipment. Still, it would be nice to have a way to prevent this. Other researchers have seen the same thing. [see edit at the end] Still, we are sticking with these sensors. They are reasonably priced, and seem to have no other problems. If there are a lot of bad values we find the problem equipment and remove it. Otherwise we just have the Arduino sketch ignore the -127 C value and use the most recent reasonable one. Update for geeks only: we are up to 12 of these in use now, some for about 8 months. I did a calibration test with all 12 in the same insulated container of water at about 20 degrees C. The standard deviation among the sensors was 0.11 degrees. Three expensive HOBO loggers had a lower standard deviation (0.03) and indicated 0.35 degrees warmer, but I don't have any evidence that the HOBOs are actually more accurate. At 36 C, the standard deviation for the Gikfun sensors was up to 0.17, but I can't quote a temperature difference because the HOBO logger are very slow and the water was cooling enough to make the HOBO values unreliable. Edit, June 2019. I found the source of most of our sensor errors. We are powering our Arduinos with a 12 V power supply which is apparently very noisy. The Arduino itself tolerates this perfectly, we the problem wasn't obvious. Just putting a big capacitor across the 12 V wires before they go into the Arduino made the errors go away. A proper filter with optimal capacitors and an inductor would be even better.

### ⭐⭐⭐⭐⭐ Professional fit and finish! Perfect 1/4" probe fits into an RO T fitting. Accuate!
*by T***. on October 25, 2019*

These will super glue into any Tee connector with the right glue. Using Starbond Toughened Medium Thick CA. The super glue isn't needed for low pressure, but once over 20psi, I had to glue it in as it is installed in a system at 65psi. Temperature is accurate, though a little slow in responding. The whole metal sleeve needs to get to temp, or more than the 1/8" I have in the water stream, so it lags the water temperature by about 3-5 degrees, but once taken into account, or at temperature for a period of time, the temperature matches other thermometers including a Fluke thermocouple to within 1°F. The downside is conversion takes 1/8 second to 7/8 second depending on resolution. 10 bit is best, as 8 bit microcontrollers aren't so accurate beyond that unless in a critical application. This is due to the Dallas OneWire sensor and not the probe or cable attached to it. They are VERY high quality and professional supple cable with strain relieved weatherproof end at metal probe side. I crimped JST connectors to the wires simply for portability as I glued a few into Tees for RO monitoring, the lack of a connector is a bonus as it allows you to use what is needed. Out of box the wires are tinned and stiff enough to plug directly into a breadboard for a microcontroller. Using with both a PIC32 and Arduino and having zero issues.

### ⭐⭐⭐⭐⭐ Works great with the Shelly add-on
*by S***B on August 18, 2024*

Am using for temp sensors in home assistant on a Shelly add-on for a Shelly 1 plus. Have one probe outside, one inside, and another on my hot water heater. Easy and works, cheap, stable, accurate enough, and no battery to deal with.

## Frequently Bought Together

- Gikfun 5PCS 1M DS18B20 Temperature Sensor Waterproof Digital Thermal Probe Sensor for Arduino EK1083
- Shelly Plus Add-On | Wi-Fi & Bluetooth Add-On for Shelly Plus Devices | Measure Temperature and Humidity | Home Automation | Works with Alexa & Google Home | iOS Android App |No Hub | Digital Sensor
- Shelly Plus 1 UL | WiFi & Bluetooth Smart Relay Switch with Dry Contacts | Home Automation | Alexa, SmartThings & Google Home Compatible | No Hub | DIY Remote Control | Garage Door Opener (4 Pack)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-20*