{"product_id":"the-sentinel","title":"The Sentinel","description":"\u003cdiv class=\"relative basis-auto flex-col -mb-(--composer-overlap-px) pb-(--composer-overlap-px) [--composer-overlap-px:28px] grow flex\"\u003e\n\u003cdiv class=\"flex min-h-0 grow flex-col text-sm\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"LR5Y_W_content markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"LR5Y_W_content markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003ch1 dir=\"auto\" class=\"PDq2pG_selectionAnchorContainer\"\u003eTHE SENTINEL™\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003ch2 dir=\"auto\"\u003eA Quieter Approach to Spirit Communication\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel™ represents a different approach to spirit communication equipment from \u003cstrong\u003eHorn Paranormal Research\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eUnlike a traditional spirit box, \u003cstrong\u003eThe Sentinel does not fill the room with a constant stream of radio sweep noise, static, or fragmented broadcasts.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eInstead, its multi-band radio system continuously scans and analyzes multiple portions of the radio spectrum \u003cstrong\u003esilently in the background\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe investigator asks questions, observes the environment and waits.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eWhen The Sentinel generates a response, that response is \u003cstrong\u003espoken through the device and simultaneously displayed on its screen.\u003c\/strong\u003e Responses can be produced using \u003cstrong\u003emale, female or child voice outputs\u003c\/strong\u003e, with support for both \u003cstrong\u003eEnglish and Spanish responses\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNo constant sweep noise. No talking over the radio. No trying to determine whether a voice was simply part of a passing broadcast.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAsk your question.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eWait.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eListen for the response.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003e5 BANDS • 3 SWEEP MODES • 2 LANGUAGES • 3 VOICE TYPES\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel combines a wide multi-band scanning system with multiple scanning behaviors and a diverse spoken response system—all within one self-contained instrument.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1 dir=\"auto\"\u003eTHE SENTINEL LISTENS WHERE HUMAN EARS CANNOT\u003c\/h1\u003e\n\u003ch2 dir=\"auto\"\u003eBEYOND THE RANGE OF HUMAN HEARING\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eHuman ears and The Sentinel are listening to two very different things.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eHuman hearing detects \u003cstrong\u003eacoustic sound\u003c\/strong\u003e—pressure waves traveling through the air. The commonly cited range of human hearing is approximately \u003cstrong\u003e20 Hz to 20,000 Hz (20 kHz)\u003c\/strong\u003e under ideal conditions, with the upper limit typically decreasing with age.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel is doing something fundamentally different.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIts software-defined radio (\u003cstrong\u003eSDR\u003c\/strong\u003e) is not simply listening for acoustic sounds that are too quiet for us to hear. Instead, it electronically monitors \u003cstrong\u003eradio-frequency electromagnetic activity\u003c\/strong\u003e, measured in megahertz (MHz), across five different radio bands.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel monitors frequencies ranging from \u003cstrong\u003e87.5 MHz through 470 MHz\u003c\/strong\u003e within its individual scanning bands.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eThose radio frequencies are not sounds that the human ear can hear.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThey are \u003cstrong\u003eelectromagnetic signals\u003c\/strong\u003e that require electronic equipment to receive and process.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis is an important distinction. The Sentinel isn't simply amplifying something that was too faint for you to hear. Its SDR receiver allows the system to monitor and process activity within portions of the electromagnetic spectrum that \u003cstrong\u003eour ears cannot directly perceive at all\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAnd because The Sentinel performs this scanning and processing silently, the investigator doesn't hear the underlying radio sweep.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eYou hear the responses—not the sweep occurring behind them.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eHUMAN EAR:\u003c\/strong\u003e Detects acoustic pressure waves, approximately 20 Hz–20 kHz under ideal conditions.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eTHE SENTINEL:\u003c\/strong\u003e Electronically monitors RF electromagnetic activity across five radio bands ranging from 87.5–470 MHz.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eThese aren't simply different frequencies of the same type of sound. Acoustic sound and radio-frequency electromagnetic energy are fundamentally different physical phenomena.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eMULTI-BAND RADIO SCANNING\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel isn't limited to the traditional FM sweep found in many spirit boxes.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIts internal SDR-based radio system scans across \u003cstrong\u003efive different radio ranges\u003c\/strong\u003e, dramatically expanding the spectrum available to the system:\u003c\/p\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"last:pe-10\"\u003eBand\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eFrequency Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFM Broadcast\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e87.5–108.0 MHz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVHF Air Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e118.000–136.975 MHz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVHF High Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e136–174 MHz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNOAA Weather Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e162.400–162.550 MHz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUHF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e400–470 MHz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel continually moves through these ranges rather than stopping and holding on individual stations or frequencies.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAnd unlike a conventional spirit box, \u003cstrong\u003eyou don't hear this scanning process\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe scanning, signal analysis and processing happen behind the scenes, allowing the investigation environment to remain quiet between responses.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eTHREE SWEEP MODES\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel provides \u003cstrong\u003ethree distinct sweep modes\u003c\/strong\u003e, allowing investigators to change how the system moves through its active frequency ranges while maintaining the quiet operation that defines The Sentinel.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eFORWARD\u003c\/strong\u003e — Progresses upward through the frequency range in sequence before continuing the scanning cycle.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eREVERSE\u003c\/strong\u003e — Reverses the direction of the sweep, progressing downward through the frequency range.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eRANDOM\u003c\/strong\u003e — Breaks away from sequential scanning and moves through frequencies in a randomized pattern, creating a less predictable method of sampling the spectrum.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eRegardless of the selected mode, \u003cstrong\u003eThe Sentinel does not stop and hold on individual frequencies or stations.\u003c\/strong\u003e Scanning remains continuous and occurs silently in the background.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eCombined with adjustable \u003cstrong\u003eSweep Speed\u003c\/strong\u003e and \u003cstrong\u003eGate\u003c\/strong\u003e, the three modes give investigators the ability to experiment with different scanning behaviors from one session to another.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFive radio bands. Three sweep modes. One quiet investigation environment.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eTHE SILENCE IS PART OF THE EXPERIENCE\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eTraditional spirit boxes rely on an audible sweep. That means investigators often spend a session listening through rapid fragments of music, voices, static and broadcast material while attempting to identify possible responses.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel was designed around a different idea:\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat if you didn't have to listen through all of that noise?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eWith The Sentinel, the room can remain quiet.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAsk a question and give the system time to work.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eWhen a response occurs, everyone present can hear it without having to separate it from a continuous radio sweep.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThat creates a very different style of investigation—and makes periods of silence just as much a part of the session as the responses themselves.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eMALE, FEMALE \u0026amp; CHILD VOICE OUTPUTS\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel isn't limited to a single voice.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIts spoken response system can produce responses using \u003cstrong\u003emale, female and child voice outputs\u003c\/strong\u003e, providing noticeably different audible characteristics during an investigation.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eThese are output voices—not a library of pre-recorded or canned responses. There is NO WORD BANK on the Sentinel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel listens to and processes the activity it receives and produces its spoken output accordingly. The male, female and child voices provide different ways for that resulting output to be spoken rather than supplying a collection of predetermined phrases.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis allows the audible character of a session to change as responses occur.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eChanges or patterns involving a particular voice type can then be compared with questions being asked, the location being investigated, other equipment activity and recorded evidence.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAnd because the underlying radio scanning remains silent, these voices aren't competing against continuous radio chatter.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhen The Sentinel responds, you hear the response.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eENGLISH \u0026amp; SPANISH RESPONSE CAPABILITY\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel incorporates \u003cstrong\u003eEnglish and Spanish language output capability\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eLike its male, female and child voices, these language capabilities \u003cstrong\u003eare not a collection of canned English or Spanish responses\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel's output can be spoken in \u003cstrong\u003eEnglish or Spanish based on what the system receives and processes\u003c\/strong\u003e, rather than requiring the investigator to select a separate Spanish-only operating mode.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis adds another observable element to an investigation, particularly at locations where Spanish language, culture or history may be relevant.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eTogether, The Sentinel's \u003cstrong\u003emale, female and child voice outputs and English\/Spanish language capability\u003c\/strong\u003e provide multiple ways for its resulting responses to be presented to the investigator.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eADJUST THE EXPERIENCE\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eDifferent locations create different radio environments, which is why The Sentinel gives the investigator control over several important operating parameters.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eSweep Speed — 100–250 ms\u003c\/strong\u003e\u003cbr\u003eControls how quickly The Sentinel moves through its scanning process.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eGate — 1–10\u003c\/strong\u003e\u003cbr\u003eControls how aggressively weaker signal activity is filtered. Lower settings allow weaker activity through, while higher settings require stronger activity.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eEcho \/ Reverb\u003c\/strong\u003e\u003cbr\u003eAdjusts the character and atmosphere of the spoken audio.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eVolume\u003c\/strong\u003e\u003cbr\u003eControls the output level of The Sentinel's internal audio system.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThese controls allow investigators to experiment with different configurations rather than being locked into a single operating profile.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eSEE, HEAR \u0026amp; REVIEW THE RESPONSE\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eWhen The Sentinel produces a response, you don't have to rely solely on what you thought you heard.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eResponses are \u003cstrong\u003espoken through The Sentinel's internal audio system and simultaneously displayed on the touchscreen\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe system also maintains a \u003cstrong\u003esession log\u003c\/strong\u003e, allowing responses to be reviewed during or after an investigation.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis makes it possible to compare responses with questions asked during the session, environmental events, other paranormal equipment, audio and video recordings, and responses occurring at different points during an investigation.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe goal isn't simply to hear something.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eIt's to give the investigator something that can be \u003cstrong\u003eobserved, documented and reviewed\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003ePURPOSE-BUILT BY HORN PARANORMAL RESEARCH\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel isn't a commercially available radio placed inside a custom enclosure.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe hardware platform, scanning system, software, user interface, controls, audio system and enclosure were developed together to create a dedicated paranormal research instrument.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eEach Sentinel combines its internal computer, \u003cstrong\u003eSDR radio hardware\u003c\/strong\u003e, physical controls, speaker system, rechargeable power system, active cooling and external antenna connection into one self-contained portable device.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe result is equipment designed specifically around the way we wanted it to operate in the field—not around the limitations of an existing consumer radio.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 dir=\"auto\"\u003eAN EXPERIMENTAL RESEARCH PLATFORM\u003c\/h2\u003e\n\u003cp dir=\"auto\"\u003eParanormal research is inherently experimental.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe Sentinel does not claim to prove the existence of spirits, nor can it guarantee that a response originates from a paranormal source.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eInstead, it provides investigators with a platform for experimentation, observation and documentation.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAsk questions. Document the responses. Compare them with other equipment and recorded evidence. Look for repetition, relevance and patterns.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAnd ultimately, \u003cstrong\u003eevaluate the results for yourself.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch1 dir=\"auto\"\u003eTHE SENTINEL™\u003c\/h1\u003e\n\u003ch3 dir=\"auto\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLISTEN. DETECT. EXPLORE BEYOND.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e5 BANDS • 3 SWEEP MODES • 2 LANGUAGES • 3 VOICE TYPES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eRelease Date: September 25th\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eDesigned \u0026amp; Built by Horn Paranormal Research\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e15k MAH rechargeable battery. 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