Ultrasonic Signal Technology
- Ensures reception of alarm signal
- Results in very few false alarms
- No “bleeding” of signal between walls or floors
- Variable range to 30 m (100 ft) diameter
Personal Alarm System for Emergency Response
One or more receivers are installed in each room or hallway that the system is required to cover. Upon activation, the transmitter carried by an individual emits a continuous ultrasonic signal. Receivers will only alarm when they receive a transmission containing specific frequencies in an established pattern. This eliminates false alarms from items such as keys, metallic items, and HVAC systems. The signal is omni-directional, eliminating the need to point or direct the transmission.
PAS transmitters are discreet, compact and rugged and can be worn on a belt with a belt clip or holster, or as a pendant. Transmitters can be activated by button press, pendant pull-ring or self-activated in a man-down situation. Receivers are flush-mounted in the wall or ceiling and provide alarm and tamper contacts.A visible LED illuminates when an alarm is received.
The PAS receiver decodes the modulated ultrasonic signal emitted by the PAT. An alarm contact, auxiliary contact and LED activate each time an alarm is received and remain latched when an activated transmitter is within range. Receiving range is factory adjusted for a nominal distance of 15 m (50 ft) radial, 30 m (100 ft) diameter and can be field-adjusted as required.
The PAT is activated by pushing a latching alarm button which has been specifically designed to prevent accidental activation. Additional methods are available as options, including pendant pull ring and “man down” (“man down” provides automatic transmission whenever an individual is in a prone position for a period of time). A breakaway lanyard is supplied with the PAT/C (compact unit) while sturdy pocket/belt clips enable a variety of carrying positions.
The PAT test unit allows customers to regularly test the PAT units and maintain confidence in the operation of the system.
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