5
In different functional interfaces, the key functions performed are
not exactly the same.
Do not use the BT280 probe to test the voltage of the house-
hold AC Power (such as 110V, 220V plug), it may cause
serious injury and property damage for improperly operation.
Circuit
breaker
protection
Left key – Navigation key or exit key.
Right key – Navigation key.
Up key – Navigation key or voltage output, numerical adjust-
ment.
Down button – Navigation button or voltage output, numerical
adjustmen.
OK – Confirm key.
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Short – Circuit automatic protection - if current overloaded, its
internal circuit breaker system will automatically tip for protec-
tion. The circuit breaker monitors this tool at all times. As an
essential safety measure to prevent overload, it is a very
practical function.
Fuse Protection – Equipped with a 25amp fuse in the auxilia-
ry grounding lead, which can be protected when the device is
short-circuited or overloaded.
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NOTE: