The Model #721125 Power/Access Plug-in Card provides 15W @ -48 Vdc output from a floating 48 Vdc power input source. This lower cost Power/Access plug-in power supply delivers a lower power output than the flagship Power/Access card #721123 and can be used only for indoor applications. It offers the same Local and Remote alarm connectivity as the Access card Model #720001 and the Power/Access Card Model #721123.
The Model #721125 15W Power/Access plug-in card can be used in all TeleLite shelves and provides 15W @ 48 Vdc to power TeleLite fiber service cards from a floating source of 48 Vdc derived from the substation batteries. The DC power input is isolated from ground so as not to compromised the floating nature of the substation batteries. Input power connections are made using screw terminals of the card's faceplate