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 and oscilloscope that are used to monitor, measure and analyze signals that you may or may not want to sound 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.
If you have trouble making the connection work, contact us for free assistance.
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 placing the vibration sensor on the floor next to the entrance door. When the door touches the sensor, the alarm will sound. See (Simple Inside Alarm System) on the shop page.
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), (SOLAR SUPERSTORM).
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) and (A Closer Look).
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