Hikvision DS-2CD2T46G2-4I AcuSense Bullet IP Camera

The camera is available with several lenses and the lens is important for "FOV" (Field Of View) or in Danish: Viewing angle.
2.8 mm lens gives a horizontal (horizontal) FOV of 103 °, vertical (vertical) FOV 55 ° and diagonal (from corner to corner) FOV 123 °
4 mm lens provides a horizontal (horizontal) FOV of 83 °, vertical (vertical) FOV 45 ° and diagonal (from corner to corner) FOV 98 °

About AcuSense
Even though the camera is intelligent, it still needs some input from you. When the camera is mounted, you can choose between several types of "smart events" including "Detection of intrusion" where a square is drawn in the image and when a target moves into the square and stays longer than you have allowed (1 -10 seconds) your "reaction" is triggered. There are also line intersections where detectors about a "target" move across the line you have drawn. It can be both ways or just one way. It can e.g. is used for one-way roads, so that an alarm is given when driving in the opposite direction or in a driveway so that you are only notified when people arrive, but not when they leave.

What is a reaction? The event that is triggered when a rule is violated is called a "reaction". Depending on which model is chosen, you have different options.
Most used "reactions":

• Push message on mobile (get a picture sent directly to your phone, of the target that has broken the rule, with a link to direct play in APP)
• Send email (this feature should be used with caution as the mail provider may close your account for suspected spamming if too many photos are sent)
• Flashing white light
• Warning sound (siren or voice warning - it is also possible to record your own messages) *
• Alarm output (open a garage door, turn on lights, send signal to your alarm system, interact with IHC, etc