Rated 5.00 out of 5 based on 2 customer ratings
(2 customer reviews)

RasClock – Raspberry Pi Real Time Clock Module


In stock


RasClock is a highly accurate real-time clock that fits on a Raspberry Pi and includes a battery backup. Now available to purchase!

RasClock uses one of the following chips:

All of these have the following features:

  • Very accurate timekeeping (typically ±3ppm or <2 minutes deviation per year).
  • Integrated crystal that compensates for temperature and age.
  • 3V CR1220 battery (not included) will keep the time for around two years if the device isn’t used and considerably longer if it is.

The module is installed directly into the GPIO header at the corner of the Raspberry Pi. It uses the 3.3V, GND SDA and SCL pins. The module stays within the outline of the Raspberry Pi and sits lower than video output so it should fit within most cases.

Required Battery (Not Included)

CR1220 Coin Cell, sku 993


2 reviews for RasClock – Raspberry Pi Real Time Clock Module

  1. Rated 5 out of 5

    ve3vxy (verified owner)

    Easy to install, and set up. best product by far, now I can run my RaspPBX without internet connection.

  2. Rated 5 out of 5

    Aaron (verified owner)

    Works perfectly to enable time stamping of SCBA cylinder fills in a tracking db at our fire hall without the need for an internet connection.

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