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SD2405 Real-Time clock Module(Arduino Gadgeteer Compatible)

SKU: TOY0021

$21.07 AUD, inc GST
$19.15 AUD, exc GST

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SD2405 Real-Time clock Module(Arduino Gadgeteer Compatible)
21.07 AUD

SKU: TOY0021

$21.07 AUD, inc GST
$19.15 AUD, exc GST


  • $6.95 Standard (2-4 days, tracked)
  • $9.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.


A real-time clock (RTC) is a computer clock (most often in the form of an integrated circuit) that keeps track of the current time.The term is used to avoid confusion with ordinary hardware clocks which are only signals that govern digital electronics, and do not count time in human units.
Compared with the cheap RTC module in the market now, this SD2405 Real-time clock module is low power consumption and high accurate solution. The typical power consumption is about 1.0uA. It intgerated the crystal and it ensure the accuracy of clock is about 5ppm.That means even if keep running one year, the deviation of this RTC module should be less than 2.5 minutes without the calibration. It supplies the time data via I2C interface and the time format is configurable to be switched between 12 hours and 24 hours. However, another good feature is the time alarm function via interrupt event output. So this RTC solution should be worth to try.
It integrated with a rechargeable battery, which can be used for about 5-8 years. The module will automatically charge the battery inside when plugin the external power supply from "+5" pin.
This module supports both 3.3v/5v,which makes it compatible with both Gadgeteer/Arduino DUE 3.3v and Arduino Standard 5v systems. Including 5 Pin headers supplies the easiest way for the module to be connected to Arduino microcontrollers.
  • External power range: 3.3~5.5v
  • Supply fixed time alarm via interrupt output
  • Typical power consumption: 1.1uA
  • Selectable 12/24 hours format
  • Interface: I2C and interrupt output
  • Accurancy: about ±5ppm
  • Deviation: less than 2.5 minutes every year
  • Pin ESD > 4KV
  • 0.5s IIC Bus auto reset function to avoid from getting stuck
  • Industrial grade
  • Temperature range: -40~+85℃
  • Switch for disconnecting the I2C pull-up resistors
  • Size:36x31x14mm
Shipping List
  • SD2405 Real-time clock Module(Gadgeteer Compatible)1unit
  • Cable for Gadgeteer1unit
Documentation and Resources:

Product Comments

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $9.95 for Express Post (Overnight for most of Australia, 2+ days for rural, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
NSW, 2289

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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