BACO Domestic Switches LED 630379 - BACO 224254, BACO manufactures the BA33SAYL LED, a yellow LED indicator that operates on either 12 V DC or 24 V DC. It is typically used in control panels and machinery to signal status or alerts. The product is part number 224254 and is supplied one piece per order. BACO BA33SAYL LED Yellow 12/24V DC 1 piece