# Receptor Module The Receptor module acts as the sensor of the Controller module by providing the yin's price to Shrine for the Controller to actuate on. At the moment for CASH, the Receptor relies on Ekubo's [oracle extension](https://github.com/EkuboProtocol/oracle-extension) to read the median time-weighted average price (TWAP) of CASH / {DAI, USDC, USDT}. The TWAP duration is initially set to 3 hours but is expected to be adjusted downwards over time. ## Description of key functions * `update_yin_price` : fetch the current price of yin and submit it to Shrine. This is intended to be executed via the `ITask.execute_task()` interface. ## Conditions for triggering a yin price update There are two possible ways in which a price update can be triggered: 1. sufficient time has elapsed from the last **successful** attempt to update yin's price; or 2. the caller has been granted access to call `update_yin_price`, bypassing the requirement in (1). Option (2) is not used in the current design of the protocol. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.opus.money/current/technical-documentation/smart-contracts/receptor-module.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.