Description of Survivor Alert
Survivor Alert is a battery powered earthquake detector, with an alarm, lantern, and a separate wall mounted bracket.
Function
The function of Survivor Alert is to react to and confirm earthquake activity, sound an alarm, and provide light. It is primarily intended to be mounted on the wall of a bedroom, adjacent to an exit. when the unit detects quaking as horizontal or vertical movement, or a combination thereof, the alarm will sound and a lamp within the unit will turn on. At night the light will illuminate the room, allowing the occupant's sufficient light to take cover or exit the area. Should the occupant's choose to relocate or exit during a commercial power failure, or one that may be impending, the unit may be snatched from the wall mount and used as a lantern. The alarm may be switched off by moving the switch to the "LIGHT ONLY" position, thereby allowing the use of only the light, or should the occasion arise, switch back to the "ACT" position, which will permit the alarm to be used in combination with the light. This action would norally be taken to alert other occupants or in the case of entrapment, to call attention to oneself.
The detector has been effectively designed for use in conjunction with a wall-mount bracket. The bracket is affixed to an inner wall in order to preclude extraneous movements that could produce false triggering.
Proper centering of the E.D.D. device is essential for the unit to function properly as a movement detector. This is accomplished during initial wall mounting with the two adjustments provided for by the bracket. The ribbed and elongated lower mounting hole in the bracket permits the unit to be moved from side-to-side when it is necessary and the ribbed screw hole of the bracket's top plate allow this facing to be adjusted in or out, compensating for any variation in the plumb of the wall.
At the time of mounting, the sensitivity control is turned to a predetermined setting of its range and the switch is moved from the "OFF" to the "SET" position. A red light above the switch will turn on and remain on when the device is out of alignment. Movement of the two aforementioned adjustments will cause the light to change from a steady glow to blinking. As the unit comes close to alignment, the blinking will slow and when it has reached its "set point," the red light will shut off. The sensitivity control dial will generally be left in this position but may be further adjusted at this time to cause the device to become more or less sensitive to movement. When the red light is extinguished, the switch is moved from the "SET" to the "ACT" (activated) position.
When the switch is in the ACT position and earthquake activity occurs with sufficient magnitude to cause structural movement, the alarm will sound and the lantern will switch on. Further, the red light above the switch will blink, and continue to blink, as long as movement continues but will extinguish itself after the quaking activity subsides. The alarm will automatically turn itself off after approximately 30 seconds of detecting no activity. However, the light will remain on until the switch is manually moved to the OFF or SET position