Beta 1760/IR500 Mode D'emploi page 16

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3. Safety
1) Use extreme caution when the laser beam is turned on.
2) Do not let the beam enter your eye, another person's eye or the eye of
an animal.
3) Be careful not to let the beam on a reflective surface strike your eye.
4) Do not allow the laser light beam impinge on any gas which can
explode.
5) Use the suitable battery (9V dry battery).