Apem QS Series 12mm LED Panel Indicators - APEM QS123XXY24, A 12mm 24V DC snap-in panel mount yellow LED indicator with a coloured diffused flat lens. Ideal for applications such as domestic and commercial white goods, catering equipment, fire alarm panels, power distribution sockets, battery chargers/power supplies. APEM QS123XXY24 12mm LED Panel Indicator Yellow 24V DC Wire Terminals