Twilight DT4221, Instruction Manua

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Inserting/Replacing the Battery
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2.2 Inserting/Replacing the Battery
Before using the instrument, insert one LR03 alkaline battery.
Before measurements, check that the battery level is sufficient.
When the battery charge is low, replace the battery.
Nickel-metal hydride batteries
Nickel-metal hydride batteries can be used. However, the
discharge characteristic of these batteries is different from that
of alkaline batteries. Be aware that the remaining battery power
display does not function properly.
WARNING
To avoid electric shock, move the tips of the test
leads away from the measurement object before
replacing the battery.
CAUTION
Poor performance or damage from battery leakage
could result. Observe the cautions listed below.
• Do not use old batteries.
• Be careful to observe the battery polarity during
installation.
• Do not use batteries after their recommended expiry date.
• Do not allow the used battery to remain in the instrument.
• To avoid corrosion from battery leakage and/or
damage to the instrument, remove the battery from the
instrument if it is to be kept in storage for an extended
period.
To avoid the possibility of explosion, do not short
circuit, charge, disassemble, or incinerate batteries.
After battery replacement but before using the
instrument, reattach and screw down the battery cover.