Triplett Fox 2 – PN: 3382 - Manual (Page 5)

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6) Use care when connecting the FOX 2 to any wire or cable.
An unexpected dangerous voltage may be present, which
may result in injury to the user.
7) Potentials applied to any connection of the FOX 2 may
appear on other FOX 2 connections. For example, a
potential applied to the alligator clips may appear on
the RJ-45 jack and the Wireless Interface plug. This could
pose a shock hazard to the user, if for example, a LAN
cable with 120VAC on it is connected to the FOX 2. The
120VAC may appear on the alligator clips, and shock
the user.
8) The FOX 2 is designed to tolerate accidental application
of 120VAC across its alligator clips, across the Wireless
Interface plug, and across its RJ-45 jack. However, there
is no protection circuitry to protect against the applica-
tion of 120VAC between the different connections. For
example, a 120VAC connection between the Wireless
Interface plug and the alligator clips is not protected.
Product damage and user injury may result if 120VAC
is applied in this manner.
9) The 8 pins of the RJ-45 jack are separated into 2 groups
of 4 pins. The 4 pins are shorted together in each group.
The FOX 2 applies its Tracer Tone across these groups.
The FOX 2 is protected against the application of 120VAC
across these groups. If 120VAC is applied to the RJ-45
jack in a manner that causes the voltage to be applied to
the pins within one of the groups, the 120VAC will “see”
a dead short. This may result in damage to the product
or injury to the user.