Mains Operation; Switching On And Connecting With A Mobile Terminal Device - TESTO 330i Instruction Manual

5 First steps
2. Plug the mains plug of the mains unit into a mains socket.
- The charging process starts (red LED flashes: 0.5 s on/0.5 s
off).
- The charging process stops automatically when the battery is
charged (red LED is constant).
Rechargeable battery care
• Do not fully exhaust rechargeable batteries.
• Store rechargeable batteries only if charged and at low
temperatures, but not below 0 °C. The best storage conditions
are with a charge level of 30-70% and an ambient temperature
of 0-15 °C. Fully charge before using again.
• Optimal charging temperature at 20 °C ambient temperature.
• Trickle charging should not exceed 2 days.
5.2.2.2.

Mains operation

1. Connect the instrument plug of the mains unit to the mains unit
socket on the measuring instrument.
2. Plug the mains plug of the mains unit into a mains socket.
- The measuring instrument is powered via the mains unit.
- If the measuring instrument is switched off and a rechargeable
battery is inserted, the charging process will start automatically.
Switching the measuring instrument on has the effect of
stopping the battery charging and the measuring instrument is
then powered via the mains unit.
5.2.3. Switching on and connecting with a mobile terminal
device
✓ The testo 330i App must be installed on your mobile terminal
device. Please note the information in the document
Commissioning and Safety (printed version supplied with the
product).
1. Switch on the measuring instrument: Press the
- Measuring instrument starts up: The blue LED flashes
(0.05 s on/0.5 s off).
- Connecting mode is activated: The blue LED flashes
(0.5 s on/0.5 s off).
2. Switch on the mobile terminal device.
12
key.