Tripp Lite ISOBAR6ULTRA

D0 No Radio — No radio at all. It cannot phone home.

The unplug test

This device does not know your router exists. It is a metal box full of varistors and chokes between the wall and your equipment, with three LEDs that light from the AC line itself, not from any logic. Losing internet changes nothing about it, ever, because nothing in it was ever connected to anything.

Why this tier: A purely passive surge suppressor: metal oxide varistors, toroidal chokes, ferrite inductors and capacitors feeding isolated filter banks, plus a mechanical circuit breaker and status LEDs. The manufacturer's own datasheet lists every component and control on the unit and none of them is a radio, microcontroller, app, or network interface.

Specifications

Account required	none
Works offline	fully
Forced firmware updates	no
Radios	none
FCC ID	no intentional-radiator grant found
Local control	none
Phones home	none
Parts available	unknown
Availability	in stock
Price band	$40-60 (seen 2026-09-03)
Vendor risk	0 / 3

Where to buy

Tripp Lite / Eaton (manufacturer)

Sources

Class A is primary (manual, FCC filing, teardown). Class B is corroborated community reporting. Class C is never sufficient alone.

A https://assets.tripplite.com/product-pdfs/en/isobar6ultra.pdf
Full manufacturer datasheet: 3330 joules, 6 NEMA 5-15R outlets in 3 isolated filter banks, 120V/12A, MOV+choke+capacitor suppression components, mechanical circuit breaker, diagnostic LEDs, automatic permanent shutoff at end of protection life. No electronics beyond passive suppression components and LED indicators; no app, network, or wireless feature listed anywhere in the spec table. — accessed 2026-09-03
A https://tripplite.eaton.com/support/isobar6ultra
Manufacturer support/product page confirming current model listing and availability of the owner's manual, with no setup app or account referenced. — accessed 2026-09-03 · archived

History

2026-09-03 — First published at D0.

Last verified 2026-09-03 — 3 days ago.