Optus - Residential Sales typically offers a warranty period of twenty-four months for most residential devices, such as modems and routers, purchased directly from their services. This warranty generally covers manufacturing defects and hardware issues that may arise during normal usage. However, it is important to note that some specific devices or accessories may come with different warranty terms, which could be specified at the time of purchase. Customers should also be aware that any damages due to misuse or accidental damage may not be covered under the warranty. For detailed information regarding specific devices, warranty terms, and any other policies, it is advisable to refer to the Optus website. There, one can find comprehensive information including current terms and conditions that might apply.