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Raspberry Pi RTC Expansion Module v1.1 (Seeed Studio)

SKU: SS114100001

$12.85 AUD, inc GST
$11.68 AUD, exc GST

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Raspberry Pi RTC Expansion Module v1.1 (Seeed Studio)
12.85 AUD

SKU: SS114100001

$12.85 AUD, inc GST
$11.68 AUD, exc GST
In stock, with a short lead time. 33 units dispatch in 6 to 14 days (in addition to the shipping method you choose). Our timing and stock is accurate. Delivery to you by Fri, 6th of Apr with Express Post within Australia.


  • $6.95 Standard (2-4 days, tracked)
  • $8.95 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.

The RTC module is specifically designed for Raspberry Pi. It communicated with Raspberry Pi through I2C bus. There is a Maxim DS1307 and CR1220 button cell on the board to keep the real time for a long time after the Raspberry Pi has it’s power off. In order to offering a convenient way to debug, there are five pin has been setup which are 5v, 3.3v, Rxd,Txd on borad.


  • Use Maxim DS1307 chip

  • Extends CR1220 button cell backup

  • Can be operated by a shell

  • Set a serial port connector

  • Programmable square-wave output signal

  • Consumes Less than 500nA in Battery-Backup Mode

  • Automatic Power-Fail Detect and Switch Circuitry

  • Programmable Square-Wave Output Signal


  • Accuracy ±2ppm from 0°C to +40°C

  • Work voltage 5V

  • Battery Backup Input for Continuous Time keeping

  • Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year • Compensation Valid Up to 2100

  • Work temperature 0°C to +70°C

Part List

  • 1 x RTC Module


It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.

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)
  • $8.95 for Express Post (Overnight for Australia Post Next Day Network, 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:

Unit 18, 132 Garden Grove Parade
NSW, 2289

Please checkout our customer service page if you have other frequently asked 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.