The UM3561 is a CMOS 8-pin sound generator IC that can play siren sound with only a few external components.
Important: The original UM3561 is no longer in production - this Chinese copy is pin to pin compatible, but can produce only one type of siren sound and not all three
The operating voltage of UM3561 is from 3V to 5V and consumes a maximum current of 150uA. The output current can be as high as 3mA good enough to drive an 8 ohm speaker.
Returns Policy
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
1. Damaged During Shipment
If you receive a product damaged during shipment, please notify us within the 3 days of you receive the product, supported by the proper pictures and description. Once our support team accept the return, we will provide a replacement or a complete refund including the return shipping cost.2. Wrong Item Shipped
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
Limitation of Returns
We don't accept the returns for the products damanged by improper use of the product. Moreover we don't accept the return, if the ordered product is not fit for any specific application. Please read the product specifications and datasheet before selecting and ordering a product. Returns are accepted only with 3 days from the date of delivery.Shipping
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