Residential Motion Detector FS911 | Forest Security
Residential Motion Detector FS911

The interior motion detector is an essential element of your security system, because it’s the main device that detects when someone is in your home when they shouldn’t be. A motion sensor uses smart technology to detect movement in an area. If a sensor is tripped, a signal is sent to your security system’s control panel, which connects to your monitoring center, alerting you and the monitoring center to a potential threat in your home.

Passive Infrared (PIR)

The PIR motion detector detects body heat (infrared energy). Passive infrared sensors are the most widely used motion in home security systems. When your system is armed, your motion sensors are activated. Once the sensor warms up, it can detect heat and movement in the surrounding areas, creating a protective
“grid.” If a moving object blocks too many grid zones and the infrared energy levels change rapidly, the sensors are tripped.

Forest PIR has a new sleek tear-drop shape. It is ideal for residential applications. With a generous coverage area of 90°40 x 40, it has remote programmable features including disarm/disable and pet immunity up to 55 pounds. It also has a wall tamper, internal case tamper, survey LED, low battery indicator, adjustable sensitivity, and pulse count.

Forest Two-Way Transmitters

Two Way transmitters offer greater security by operating in the 905-924 MHz spectrum band offer numerous advantages over other products:

  • Longer range due to less strict regulatory requirements for the 905-924 MHz frequency band in comparison with the 300-433 MHz band
  • Support for more frequent sensor check-ins, increasing system reliability
  • Spread-spectrum technology for greater reliability and protection from jamming
  • Two-way communications for greater reliability
  • Greater range with support for up to eight repeaters⋅ Shorter wavelengths are less likely to be blocked by new walls or other changes made to a protected area⋅UL approved for commercial fire installations
  • Longer battery life for lower maintenance costs

900 MHZ SPREAD-SPECTRUM TECHNOLOGY

Forest’s wireless communication employs 900 MHz frequency-hopping spread-spectrum to ensure clear and accurate signal transmissions without interference in practically any environment. The spread- spectrum technology enables the system to use numerous channels within the 905-925 MHz band and to dynamically hop from frequency to frequency.

By using spread-spectrum technology, this virtually ensures that our wireless system cannot be defeated by jamming. With non-spread-spectrum systems that operate in a narrow frequency band, an intruder can use a wireless device to flood the area with transmissions at the same frequency used by the alarm system, thereby preventing alarm signals from reaching the receiver.

Every 32 milliseconds, Forest’s Two-Way Wireless hops to a new frequency across 53 frequencies. The order is random and determined by the house code of the panel.Although spread-spectrum technology uses frequencies that other systems use, and it will see interference from other systems, it is designed to overcome that interference inherently.

This is one of the main advantages of spread-spectrum wireless.If the device and receiver hop to a different channel and encounter a channel that has interference, it simply moves on, and the data acknowledgment will not be received, thus requiring the panel or sensor to resend that signal. This trying and re-sending will automatically occur until the message is sent and acknowledged. This self-healing system is very reliable.

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