21Y411 up for sale is a new hammond manufacturing plug in class 2 power supply model F5-AC2440VA-25 input 120V 60 HZ 60 W output 24 Volts 40 VA , nice for home alarm systems and other home uses where you need 24 volts , comes as shown in photos new and in factory box , see our store we add new items like this weekly , thank you rwk