Specification :

The 188FFF is a Fuse and Fault Finder which comprises of two
parts:
The Receiver and the Transmitter.
The Transmitter , draws a current from the mains supply circuit to
which it is connected to. The Signal Current from the Tx is at about
10kHz. The Transmitter is powered by the mains and requires no
batteries.
The 10kHz signal current generated by the Transmitter is then
searched ( sniffed) by the Receiver to detect the Fuse, Circuit
Breaker or the faulty circuit.
The Receiver is a tuned circuit which has it' s center frequency tuned
to about 10KHz. The sensor is located in the tip of the Receiver.
The amplitude of the received signal is shown on a bar- graph type
Leds.
The more Leds ON, the stronger the signal.
The Receiver uses one 9V battery.

FINDING EARTH FAULT
To find an earth fault, or the trace faulty wire, you must connect
the transmitter in serie with the fault. For example, say, you have a
short between Line and Earth, but you don' t know where the short
is.
Connect the Transmitter, using an adaptor, in serie, in the line. If
the Protection device trips, then you will have to bypass the
protection device fo