The BK Precision 902409500 is a reliable mains power adapter designed specifically for use with the DAS220 and DAS240 models. This adapter ensures consistent power delivery, making it an essential accessory for maintaining uninterrupted operation of your data acquisition systems. Its robust construction and compatibility with the DAS220 and DAS240 guarantee long-lasting performance, making it an ideal choice for professionals who require dependable power solutions in their testing and measurement setups.