The Select-Alarm is a very unique alarm device, designed and manufactured by InfraSignal Radio, LLC. We named it Select-Alarm because you can select the type of alarm system you need.
The Select-Alarm has ten (10) modes similar to a radio receiver that are used to monitor, measure and analyze signals that you may or may not want to activate the alarm. These modes are listed in the “Select-Alarm Specifications” below.
Depending on the type of signal sensor (detector) you select and connect to the input of the Select-Alarm, it becomes your selected alarm system. The signal sensor can be a common switch, a thermal switch, a pressure switch, a light sensor, a vibration sensor, an accelerometer, an infrasound hydrophone, an infrasound microphone, or an electromagnetic pulse sensor. Simple connection information is included in the Operators Manual & Installation Guide.
When a vibration sensor is mounted on a ground stake (See Manual below) and connected to the Select-Alarm input, it can detect the early signs of a developing landslide or mudslide.
- The United States Geological Survey, See (USGS), Federal Emergency Management Agency, See (FEMA) and Centers for Disease Control. See (CDC) websites report lots of warnings signs before a landslide occurs. All of these warning signs involve small movements and vibrations in the ground. See (MUD ROCK LANDSLIDES).
- In addition to detecting landslides and mudslides, it can detect ground vibrations from rockslides, volcano’s, tornados touching the ground, pile driving, tunnel digging, oil well fracking, see (OIL WELL FRACKING video).
- If you live is a War Zone and there’s bombing within a few miles, it can serve as a local alarm to alert you to get to a bomb shelter.
If you travel frequently for sales and carry expensive samples, you can secure your hotel room by setting up the Select-Alarm and putting the vibration sensor on the floor next to the entrance door.
When a electromagnetic pulse sensor is connected to the Select-Alarm, it can detect both Solar EMP and Nuclear EMP. See (EMP) and (SOLAR ACTIVITY).
A very small accelerometer can be used with the Select-Alarm to detect an extremely small movement of an expensive item.
When an infrasound hydrophone is used with the Select-Alarm, it can detect the pressure waves from large ships propellers and alert small sailboats crossing shipping channels and shipping lanes at sea. See (Collision)
The above are a few examples of the versatility of the Select-Alarm system and how you can use it to meet your security needs.
MADE IN THE U.S.A.
Select-Alarm Specifications
10 Modes of operation: Infrasignal on strip chart mode, infrasignal on scope mode, measure frequency in infrasignal mode, 1 channel in strip chart mode, 1 channel in scope mode, measure frequency in 1 channel mode, 5 channel scan mode, 16 channel scan mode, infrasound on VU meter and voice on VU meter modes.
- 5 Adjustments: Backlight intensity of touch screen, alarm threshold, volume, squelch and tone.
- 9 AGC options: Normal AGC, fast / slow AGC, fast / slow AGC discharge, hold AGC level 15 / 30 seconds and fast / slow AGC impulse response.
- 4 Local alarm options: Enable alarm, disable alarm, alarm 10% volume and alarm 100% volume.
- 2 Remote alarm options: External alarm enabled / External alarm disabled.
- 4 built-in-test (BIT): Scan 16 test signal with test instructions, sinewave test signal with test instructions, measure frequency of test signal and alarm test.
- 1 Calibration: LCD calibration, follow the on-screen instructions.
- 2 Languages: English / Spanish.
- 2 User guides: English user guide, Spanish user guide.
- 2 Phone jacks: 1 phone jack for monitoring the output of the infrasonic modulator and normal voice audio on headphones and 1 phone jack for connecting the AGC leveled infrasound signals output to a high input impedance infrasonic recorder or other device.
- All modes, adjustments and optional settings are saved to memory and retrieved when the power is turned on. Two default exceptions, 1: The alarm is enabled. 2: The Backlight intensity is set to maximum.
- Input voltage range: +10 to +28 Volts DC.
- Input current at +12 volts: 200 milliamps (ma).
- Maximum peak input current during alarming conditions: at +10 volts = 350 ma, at +12 volts = 300 ma, at +28 volts = 165 ma.
- Infrasignal frequency range: 0.35 hertz (Hz) to 45 Hz.
- Scan 16 channels frequency range: 1 Hz to 30 Hz.
- Voice band frequency range: 300 Hz to 3 KHz.
- Power line frequency notch filter: factory set when ordered, 50 Hz / 60 Hz.
- 60 Hz power line frequency rejection: 50 decibels (dB).
- Input sensitive: 3 microvolts minimum discernable signal (MDS).
- Maximum low distortion input signal: 375 millivolts (mv) root mean square (rms) in the infrasignal frequency range of 0.35 Hz to 45 Hz.
- Input signal low distortion dynamic range: 102 dB in the infrasignal frequency range of 0.35 Hz to 45 Hz.
- Accuracy of frequency measurement due to received noise: Infrasignal mode = @ 1 Hz +/- 0.03 Hz. @ 45 Hz +/- 1.30 Hz. 1 Channel modes = Channel 1 +/- 0.03 Hz, Channel 11 +/- 0.08 Hz, Channel 12 +/- 0.3 Hz, Channel 16 +/- 0.4Hz.
- The Select-Alarm has three signal inputs, one AC coupled, one DC coupled and one AC coupled to a +10dB amplifier for weak input signals.
- Input impedance to all signal inputs, 2.0 Kilohms to the Select-Alarm‘s virtual ground.
- Case: splash proof, Size: 7.7” x 5.0” x 1.9”, Weight: 1.1 pounds