Wishiot DS3231 Real Time Clock Module High Precision AT24C32 IIC RTC Sensor Without Batteries for Arduino Nano Mega2560 Leonardo Raspberry Pi (Pack of 5) : �鶹��.ca: Industrial & Scientific

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Wishiot DS3231 clock module with arduinoWISHIOT

DS3231 Real Time Clock Module High Precision AT24C32 IIC RTC Sensor Without Batteries for Arduino Nano Mega2560 Leonardo Raspberry Pi (Pack of 5)

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1, Main chip DS3231 is a high precision RTC IC with I2C communication, it has integrated crystal oscillator and temperature sensor and hence you don't have to connect an external crystal or temp sensor.
2, DS3231 RTC module can work on either 3.3V or 5V. You can use a typical CR2032 3V battery to power this RTC module.
3, You need prepare CR2032 or LIR2032 battery since it is not included in this listing!
4,Clock chip: high-precision clock chip DS3231(there are 3 different chips for this clock module, DS3231N,DS3231SN and DS3231M, we send it by randomly.
5, What you will get is: 5 X DS3231 RTC module. If you have any question or need any support, pls feel free to contact us by click "WISHIOT" under the shopping cart.

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This item: Wishiot DS3231 Real Time Clock Module High Precision AT24C32 IIC RTC Sensor Without Batteries for Arduino Nano Mega2560 Leonardo Raspberry Pi (Pack of 5)

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Product Description

Description:

The DS3231 is a high precision real time clock module that maintains hours, minutes and seconds, as well as day, month and year information.
Operating voltage: 3.3-5V. You can use a typical CR2032 3V battery to power this RTC module, kindly note that the batteries is not included in this listing!

Specification:

Clock chip: high-precision clock chip DS3231
Clock Accuracy range: 0-40 ℃, the accuracy is 2ppm, the error is about 1 minute for a year With 2 Calendar alarm clocks
Programmable square-wave output
Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation
The chip itself is with temperature sensor whose accuracy is around ± 3 ℃
Memory chips: AT24C32 (storage capacity 32K)
IIC bus interface, the transmission speed of 400KHz @ working voltage of 5V

●32K - outputs from the DS3231 chip a very accurate 32KHz oscillator

●SQW - outputs a square-wave signal from the DS3231 chip. The frequency of the

square-wave can be changed between 1Hz, 4kHz, 8kHz, or 32kHz programmatically.

this pin can also be used programmed as an interrupt output.

●SCL - input pin for I2C Serial Clock

●SDA - input/output pin for I2C Serial Data

●VCC - power source input pin for the module; can be any voltage from +3.3V to +5.5V DC

●GND - Ground pin connection

●The SCL, SDA, VCC, and GND pins at the right side of the module are

connected internally at the left side pins with the same label.

Note: Working with the RTC requires two important steps: 1, Setting the current time, so that the RTC knows what time it is. 2, Retaining the time, so that the RTC module always gives the correct time, even when it is turned off.

Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57

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Customer Reviews	17	50	46	46	143	75
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Product information

Technical Details

Brand	‎Wishiot
Manufacturer	‎Wishiot
Model	‎LS1201X5
Part Number	‎LS1201X5
Number of Items	‎5
Voltage	‎5 Volts
Batteries included	‎No
Batteries Required	‎No
Wireless Standard	‎2.4 GHz Radio Frequency
Connector Type	‎I2C
Manufacturer	‎Wishiot
Item model number	‎LS1201X5
Parcel Dimensions	‎11.7 x 7 x 2.3 cm; 35 g
ASIN	‎B07V68443F

Additional Information

Date First Available	July 29 2019
Customer Reviews	(35) 4.6 out of 5 stars
�鶹�� Rank	#11,375 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #58 in Temperature Probes & Sensors

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Product details

Parcel Dimensions ‏ : ‎ 11.7 x 7 x 2.3 cm; 35 g
Manufacturer ‏ : ‎ Wishiot
ASIN ‏ : ‎ B07V68443F
Item model number ‏ : ‎ LS1201X5
Customer Reviews:
(35)

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Customer reviews

35 global ratings

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Customers say

Customers find this networking device works like a charm and does what it's supposed to do. The device demonstrates good accuracy, with users noting it becomes pretty accurate after 12 hours of operation. Customers describe it as a good product and a great little RTC.

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9 customers mention functionality, 8 positive, 1 negative

The networking device works like a charm and does what it's supposed to do. Customers report it works with Pico and every MCU, and gets up and running in no time.

Bought this for prototyping a RTC on xbox I2c bus and works greatRead more

...All good tho. Works well; used for clocks in xmas gifts!Read more

...These are nice to work with, do what they're supposed to,...Read more

Worked fine and easily added rtc to a Pico on I2c bus.Read more

5 customers mention accuracy, 4 positive, 1 negative

Customers find the networking device provides accurate time tracking. Users report it becomes pretty accurate after 12 hours of use and offers very precise time tracking capabilities.

...it is pretty accurate after 12 hours as close as I can check it. I am not that worried about this as I am using it on a model train setup....Read more

...verry precise time tracking.Read more

Great little RTC's, they seem to be really accurate so far.Read more

Not all modules retain accuracy...Read more

5 customers mention quality, 5 positive, 0 negative

Customers find this networking device to be a good product that is nice to work with. They describe it as a great little RTC that performs well.

Great little RTC's, they seem to be really accurate so far.Read more

...I have only tried one so far. Fast delivery, great price and quality product thanks!Read more

I've worked with many different similar devices. These are nice to work with, do what they're supposed to,...Read more

Great little RTC...Read more

Top reviews from Canada

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�鶹�� Customer
Great fun and a good product
Reviewed in Canada on February 7, 2025
Verified Purchase

They seem to work good. I am new to Adruino but I had these up and running in a few minutes after doing a lot of reading beforehand. it is pretty accurate after 12 hours as close as I can check it. I am not that worried about this as I am using it on a model train setup. I have only tried one so far.
Fast delivery, great price and quality product thanks!

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Peter
Great little RTC
Reviewed in Canada on September 11, 2024
Verified Purchase
Bought this for prototyping a RTC on xbox I2c bus and works great

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mpear
Great Precision but Needs Some Tweaking
Reviewed in Canada on August 9, 2025
Verified Purchase
I purchased this item about a month ago because I wanted to add a real-time clock to a couple of my Arduino projects. I was really impressed with the precision – it keeps time almost flawlessly, which is something I wasn't expecting for the price. The build quality feels decent and the setup was pretty straightforward. I connected it to my Arduino Nano and, after a bit of fiddling with the code, it worked like a charm. I mean, I was up and running in no time, which is always a plus when you’re eager to see your project in action.

However, I did run into a bump when I realized I didn’t have the battery situation sorted. Of course, I knew it didn't come with batteries, but I kinda assumed it would have some form of backup power since many RTC kits I’ve come across do. I had to scramble to find a button cell – a minor setback, but you know, it’d be great if they included a suggestion in the instructions. Overall, it’s been a solid addition to my toolkit, and I've even shared it with a couple of friends who are also into electronics. I think it can help in a wide range of projects but just be mindful of the power supply issue.

Pros:
• Highly accurate timekeeping
• Easy to set up with Arduino
• Good build quality for the price

Cons:
• No battery included
• Instructions could be clearer about power requirements

Overall: I recommend this product. I rated it 4 stars mainly because it offers great value and accuracy, but the power setup could be better clarified. Despite the battery hiccup, I'd recommend it if you're into DIY electronics.

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Inspect before use!
Easy to get working
Reviewed in Canada on February 12, 2026
Verified Purchase
Had working Within minutes of arrival! And still keeping track of time after a couple of months of owning.

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Technogeek
No complaints
Reviewed in Canada on September 19, 2025
Verified Purchase
Great little RTC's, they seem to be really accurate so far.

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�鶹��Customer
Works as it should
Reviewed in Canada on January 28, 2025
Verified Purchase
Bought these DS3231 Real time clock modules for some microcontroller data logger projects. The modules work with both 3.3V and 5V systems as advertised. I removed the useless power LED and also the battery charging resistor, since I installed a non-rechargeable CR2032 battery. Consensus is that if you're not using a rechargeable battery, the charging circuit should be disabled - particularly if powering the module at 5V. Without the power LED and charge circuit, the module draws about 0.5mA at 3.3V and about 0.8mA at 5V. For a battery-powered project, this is a little high, so I ended up powering the module using a microcontroller digital output that turned on when the microcontroller came out of sleep mode, and this seemed to work well.

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�鶹�� Customer
Works with Pico Pi
Reviewed in Canada on April 11, 2023
Verified Purchase
I wish I had purchased these in the first place as they operate at 3.3V and are so similar to the 5V DS1307 based modules that I didn't even need to change any programming.

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Renegade
Worked with every MCU I tested them with
Reviewed in Canada on July 30, 2025
Verified Purchase
I've worked with many different similar devices. These are nice to work with, do what they're supposed to,

I've used these with various Arduino and Espressif (ESP32) chips, RP2040, RP2350, and LGT8F328 chips. It works as expected with everything I've tried. I forget if I tried them with CH32v003 chips though, but I don't recall any problems with any MCUs.

The only downside is that they are a bit pricey.

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Top reviews from other countries

Dan
Good. Do not forget about battery charging circuit.
Reviewed in the United Arab Emirates on October 10, 2025
Verified Purchase

After receiving the modules, I removed the diode and resistor for battery charging (see on internet about the problem with not rechargeable batteries).
Both DS3231 and AT24C32 are working. I am using the EEPROM as storage for AGING register value, in case of total power loss, the controller is reading AGING from EEPROM and write to RTC (DS3231 reset Aging register after power failure).

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