1. Vari-focal lens
Easily changeable angle of view: 2.8 to 12mm
2. TW (Tele Wide)
Turn this adjustment knob clockwise or counter-clockwise to set the focal length.
3. ∞↔N
Turn this adjustment knob clockwise or counter-clockwise to set the focus.
4. After setting the focus and focal length, the adjustment knobandshould be
securely fastened.
5. Do not stamp your fingerprint on the lens and dome, which may affect picture quality.
HOW TO ADJUST ANGLE OF VIEW