The Megger MFL205 is a simple to use instrument, designed to help identify an individual fuse or circuit breaker on a fuse board or within a consumer unit. Using industry standard 4mm connectors, the MFL205 transmitter can be directly connected to a circuit using the supplied crocodile clips or - with relevant adaptors - be connected to a mains socket outlet or a light socket of the circuit that the fuse or breaker to be identified, is protecting.

With automatic sensitivity adjustment, individual breakers or fuses are pin-pointed using both visual and audible indication.

Connecting the transmitter to a live circuit automatically initiates the output signal. Using a simple sweep technique across the breakers or fuses, the receivers' automatic sensitivity adjustment tunes in to the transmitted signal to allow the breaker or fuse to be easily identified. To save battery, the receiver automatically switches off after 3 minutes of inactivity.