User Manual

4 Product description
14
4 Metric thread: For fastening the included tripod adapter.
Do not use desktop tripods, danger of tilting!
5 Right interface terminal: Radio module compartment.
6 2 LEDs: For illumination for the visual image (testo 875-2i only).
7 Digital camera lens: For recording visual images
8 Laser (not available in all countries): For aiming at the
measuring field.
Laser radiation. Do not look into the beam.
CLASS 2 LASER
9 Infrared camera lens: For recording thermography images.
Exchangeable lens (testo 875-2i only).
10 Rotating ring Manual focusing: For manual focusing.
11 Lens lock ring
12 [Trigger]: For recording (freezing/saving) images.
13 Left interface terminal: Memory card slot. Headset slot. USB
interface. Mains socket, for connecting the included mains unit.
Buffer battery slot.
14 Status LED: off (no mains unit connected), flashes (mains unit
connected and rechargeable battery charging), lights up (mains
unit connected and battery charging process completed).
4.2. Basic properties
Voltage supply
The power is supplied to the instrument via an exchangeable
rechargeable battery or via the included mains unit.
With an attached mains unit, the power is supplied automatically
via the mains unit and the instrument's rechargeable battery is
charged (only at ambient temperatures from 0 to 45 °C).
Charging the battery is also possible using a desktop charging
station (accessory).
The instrument is equipped with a buffer battery (type CR 1632) to
maintain the system data during an interruption in the power
supply (e.g. when the battery is changed).