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A Singapore Government Agency Website

Official website links end with .gov.sg

Government agencies communicate via .gov.sg websites (e.g. go.gov.sg/open). Trusted websites

Secure websites use HTTPS

Look for a lock () or https:// as an added precaution. Share sensitive information only on official, secure websites.

Service Advisory

Due to a worldwide Microsoft Outlook disruption, emails to and from CSA may be delayed. We apologise for the inconvenience.

CLS Full Product List

This page lists the active and archived products registered under the CLS(IoT).