Aiphone IS-PU-UL - 48V DC Power Supply

The IS-PU-UL delivers 48V DC at 2.1A, drawing 120W. That 48V output is the point: it is an Aiphone intercom power supply, not a general 12/24V access control supply, so it won't run a strike, mag lock, or motorized latch retraction device. If you need power for door hardware, you want a 12/24VDC supply like the Von Duprin PS902 or the Securitron AQD1 instead.

Those devices draw an inrush current profile that dedicated exit device supplies are built for, and they are separate products. The BEST RPSMLR2 Series is a power supply for motorized latch retraction exit devices, and the BEST PS161-6 is a supply for delayed egress exit devices with 120V input, 12/24V output and 6A capacity. The BEST ELR150 Series is a power supply control module for electronic access control. The Aiphone IS-PU-UL is a 48V DC 2.1A supply for intercom equipment, so an MLR or delayed egress opening is served by the exit device supplies above.

Input range on the IS-PU-UL is 100 to 240V AC, 50/60Hz, so it accepts either a standard 120V North American circuit or a 240V 50Hz supply. Only the plug and cord end determine what you can land it on.

The IS-PU-UL mounts to a 19 inch (2U) rack using the IS-RACK bracket, which is ordered separately. Without it the unit is a free-standing supply with a line cord, so plan a shelf or rack kit when it lives in an IT closet with the rest of the intercom head end.

There is no battery backup in the IS-PU-UL; it is a straight AC adapter, 100-240V AC in, 48V DC out. If the intercom head end has to ride through a power loss, that has to come from an upstream UPS. Supplies with integral backup exist in the access control world (the Adams Rite PS-1 and the Command Access PS204/204B both list battery backup) but those are 12/24VDC units and will not power Aiphone 48V equipment.

The Aiphone IS-PU-UL is an AC adapter with a 5 foot 10 inch cord that plugs in and delivers 48V DC at 2.1A, and it mounts to a 19 inch (2U) rack with IS-RACK rather than hanging on a wall in a can. An enclosure type supply is a different install: the Altronix AL1024ULACMCB is a power supply and access power controller taking 115VAC 60Hz at 4.2A input and giving 24VDC at 10A across 8 PTC outputs in a grey enclosure, and the Locknetics LP Series is a power supply with an enclosure. Those distribute power to multiple devices from a wall mounted cabinet; the IS-PU-UL is a single corded supply for one piece of equipment.

For a single 12 volt device, the ROFU 9126T is a plug in mini power supply rated 12 VDC at 1.5A with time delay, and the Command Access PS1 Series is a 24VDC linear supply with 1 amp output. The ROFU 9102-12D UL/9102-24D takes 10/120VAC 60Hz input. The Aiphone IS-PU-UL is a 48V DC 2.1A supply, so it applies where the equipment calls for 48 volts rather than 12 or 24.

The Aiphone IS-PU-UL is rated 48V DC at 2.1A with 120W consumption. Higher output supplies in the low voltage range include the Securitron AQS1210 at 12 VDC 10 amp, the Altronix AL1024ULACMCB at 24VDC 10A across 8 PTC outputs, the SDC 634 Series at 4 amp with dual voltage selection, and the Securitron AQL4 at 12/24VDC 4/3 amp. Those all run at 12 or 24 volts, so they serve a larger door hardware load rather than a 48 volt one.

No. The ROFU 10305-LA/10306-LA is a tamper resistant power transfer hinge rated 1.5A at 42V in a plastic white finish, which carries power across the gap from frame to door leaf. It does not generate power. The Aiphone IS-PU-UL is the source, converting 100 to 240V AC input to 48V DC at 2.1A output. A job with a powered device in the door leaf uses both: a supply to make the DC and a transfer device to get it across the hinge side.

The Aiphone IS-PU-UL requires a 100 to 240V AC, 50/60Hz input and has a 5 foot 10 inch cord, so it needs a receptacle within reach. Where there is no AC service at the opening, the Securitron BPSS is a boxed solar power supply, which is the unit built for locations off the building's power. For a location with AC available, the IS-PU-UL plugs in and delivers 48V DC at 2.1A.

Cord length is 5 feet 10 inches, so the supply has to land within about six feet of a receptacle. In a rack, that usually means a PDU in the same cabinet rather than a wall outlet across the closet.

It's classified as commercial-grade electronic hardware, which is what you want for an intercom head end in a multi-family lobby, school, or office building rather than a residential doorbell transformer.

The Command Access CAT Field Tester is a 12-24VDC portable power supply compatible with DeWalt, Makita and Milwaukee batteries, which is a bench and field tool for energizing hardware while you check it. The Aiphone IS-PU-UL is a commercial 48V DC 2.1A supply with a 100 to 240V AC input that mounts to a 19 inch (2U) rack with IS-RACK for a fixed installation. For a permanently powered intercom, the IS-PU-UL is the mounted supply; the field tester is for verifying hardware on the job.