{"product_id":"geiger-counter-module-for-flipper-zero","title":"Geiger Counter Module for Flipper Zero – J305 β\/γ Detector","description":"\u003cdiv class=\"pqgc\"\u003e\n\u003cstyle\u003e\n.pqgc{--ink:#14181d;--mut:#5c6470;--line:#e2e5ea;--bg:#f6f7f9;--orange:#ff6b00;--teal:#1f8a8a;--mono:\"SF Mono\",ui-monospace,Menlo,Consolas,monospace;color:var(--ink);line-height:1.62;font-size:16px;max-width:880px;margin:0 auto;-webkit-font-smoothing:antialiased}\n.pqgc *{box-sizing:border-box}\n.pqgc h1,.pqgc h2,.pqgc h3,.pqgc p,.pqgc ul,.pqgc ol{margin:0}\n.pqgc .hero{padding:6px 0 22px}\n.pqgc .kicker{font-family:var(--mono);font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--teal);font-weight:700}\n.pqgc h1.name{font-size:34px;line-height:1.1;font-weight:800;letter-spacing:-.5px;margin:8px 0 6px}\n.pqgc .sub{font-size:19px;font-weight:600;color:var(--ink)}\n.pqgc .lede{font-size:16px;color:var(--mut);margin-top:12px;max-width:62ch}\n.pqgc 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.limits li::before{content:\"!\";position:absolute;left:0;top:0;width:15px;height:15px;line-height:15px;text-align:center;background:var(--ink);color:#fff;border-radius:3px;font-family:var(--mono);font-size:11px;font-weight:800}\n.pqgc .limits b{font-weight:700}\n.pqgc details{border-bottom:1px solid var(--line);padding:2px 0}\n.pqgc summary{cursor:pointer;list-style:none;padding:13px 26px 13px 0;font-weight:700;font-size:15.5px;position:relative}\n.pqgc summary::-webkit-details-marker{display:none}\n.pqgc summary::after{content:\"+\";position:absolute;right:2px;top:11px;font-family:var(--mono);font-size:20px;color:var(--orange);font-weight:700}\n.pqgc details[open] summary::after{content:\"\\2013\"}\n.pqgc summary .qn{font-family:var(--mono);color:var(--teal);font-size:13px;margin-right:8px}\n.pqgc details .ans{padding:0 0 15px;color:var(--mut);font-size:15px;max-width:66ch}\n.pqgc details .ans p+p{margin-top:8px}\n.pqgc .legal{font-size:12.5px;color:var(--mut);line-height:1.5;border-top:1px solid var(--line);padding-top:18px;margin-top:8px}\n.pqgc .legal b{color:var(--ink)}\n.pqgc .sig{font-family:var(--mono);font-size:13px;color:var(--mut);text-align:center;padding-top:22px}\n.pqgc .sig a{color:var(--orange);text-decoration:none;font-weight:700}\n@media(max-width:640px){.pqgc .feat,.pqgc .compat{grid-template-columns:1fr}.pqgc h1.name{font-size:28px}}\n\u003c\/style\u003e\n\u003cdiv class=\"hero\"\u003e\n  \u003cdiv class=\"kicker\"\u003ePINGEQUA · J305 β \/ γ Geiger-Müller Expansion\u003c\/div\u003e\n  \u003ch1 class=\"name\"\u003eGeiger Counter · Flipper Zero\u003c\/h1\u003e\n  \u003cdiv class=\"sub\"\u003eA compact radiation-detection board. Tube on the module. Counts on the Flipper.\u003c\/div\u003e\n  \u003cp class=\"lede\"\u003eA compact \u003cb\u003eJ305 Geiger-Müller\u003c\/b\u003e expansion for the Flipper Zero. It detects \u003cb\u003ebeta (β) and gamma (γ)\u003c\/b\u003e events and is built for the community \u003cb\u003eGeiger Counter\u003c\/b\u003e app (credit to \u003cb\u003enmrr\u003c\/b\u003e). The same board also drives \u003cb\u003eAtomic Dice Roller\u003c\/b\u003e, which turns radiation events into true random numbers for games and experiments. The Flipper Zero host is not included. For education, development, and authorized testing — not a medical or legal dosimetry instrument.\u003c\/p\u003e\n  \u003cul class=\"feat\"\u003e\n    \u003cli\u003e\n\u003cb\u003eJ305 Geiger-Müller tube.\u003c\/b\u003e Hobby \/ educational GM tube on a Flipper-sized expansion board.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eBeta and gamma.\u003c\/b\u003e Specified for β and γ detection. Not specified for alpha (α).\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eFlipper GPIO dock.\u003c\/b\u003e Seats on the Flipper Zero GPIO header. The host supplies power and the screen.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eGeiger Counter app (nmrr).\u003c\/b\u003e Community app graphs counts on the Flipper display.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eAtomic Dice Roller.\u003c\/b\u003e Uses detection events as entropy for true random dice \/ coin results.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003ePWR and DET LEDs.\u003c\/b\u003e Power and detection indicators on the board, as shown in the product photos.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eNo host in the box.\u003c\/b\u003e Flipper Zero is sold separately. This SKU is the expansion module.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eStated use only.\u003c\/b\u003e Education, development, and authorized testing — not diagnosis or emergency response.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cdiv class=\"cta\"\u003e\n    \u003ca class=\"primary\" href=\"https:\/\/github.com\/nmrr\/flipperzero-geigercounter\" target=\"_blank\" rel=\"noopener\"\u003eGeiger Counter app (nmrr) →\u003c\/a\u003e\n    \u003ca class=\"ghost\" href=\"https:\/\/github.com\/nmrr\/flipperzero-atomicdiceroller\" target=\"_blank\" rel=\"noopener\"\u003eAtomic Dice Roller →\u003c\/a\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection\u003e\n  \u003cdiv class=\"sechead\"\u003e\/\/ 01 · How it works\u003c\/div\u003e\n  \u003ch2\u003eThe tube counts events. The Flipper shows them.\u003c\/h2\u003e\n  \u003cdiv class=\"tag\"\u003eNo second screen on the module. The Flipper Zero is the host, the power source, and the display.\u003c\/div\u003e\n  \u003cdiv class=\"body\"\u003e\n    \u003cp\u003eThe board carries a \u003cb\u003eJ305 Geiger-Müller tube\u003c\/b\u003e. When a beta or gamma event ionizes the tube, the module passes that pulse to the Flipper Zero over the GPIO header. Open the community \u003cb\u003eGeiger Counter\u003c\/b\u003e app by \u003cb\u003enmrr\u003c\/b\u003e and the Flipper screen shows the live count and graph. That is the “real-time display”: the host LCD, not a separate panel on the board.\u003c\/p\u003e\n    \u003cp\u003eThe same pulses can feed \u003cb\u003eAtomic Dice Roller\u003c\/b\u003e (also by nmrr). That app hashes the timing of radiation events to produce true random numbers — dice rolls, coin flips — instead of a software PRNG. You do not need a check source; background events are enough for the dice app to collect ticks, though a quiet room takes longer.\u003c\/p\u003e\n    \u003cdiv class=\"diagram\"\u003e\n\u003cspan class=\"o\"\u003eJ305 GM TUBE\u003c\/span\u003e \u003cspan class=\"d\"\u003e— beta (β) + gamma (γ) events\u003c\/span\u003e\u003cbr\u003e\n  │  \u003cspan class=\"d\"\u003epulse to Flipper GPIO\u003c\/span\u003e\u003cbr\u003e\n  ▼\u003cbr\u003e\n\u003cspan class=\"t\"\u003eFLIPPER ZERO\u003c\/span\u003e \u003cspan class=\"d\"\u003e— host · power · screen\u003c\/span\u003e\u003cbr\u003e\n  ├─ \u003cspan class=\"d\"\u003eGeiger Counter app (nmrr) → count \/ graph\u003c\/span\u003e\u003cbr\u003e\n  └─ \u003cspan class=\"d\"\u003eAtomic Dice Roller → event-timed random numbers\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003cdiv class=\"sechead\"\u003e\/\/ 02 · Quick start\u003c\/div\u003e\n  \u003ch2\u003eDock the board. Install the app. Open it.\u003c\/h2\u003e\n  \u003cdiv class=\"tag\"\u003eCommunity apps, not a PINGEQUA firmware image. Credit to nmrr for both titles named on this page.\u003c\/div\u003e\n  \u003col class=\"steps\"\u003e\n    \u003cli\u003e\u003cspan\u003e\u003cb\u003ePower the Flipper off.\u003c\/b\u003e Seat the module on the GPIO header, straight and fully down. Do not force or tilt the pins.\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003cspan\u003e\u003cb\u003eInstall Geiger Counter (nmrr).\u003c\/b\u003e Get the app from the Flipper app catalog or from \u003ca href=\"https:\/\/github.com\/nmrr\/flipperzero-geigercounter\" target=\"_blank\" rel=\"noopener\"\u003egithub.com\/nmrr\/flipperzero-geigercounter\u003c\/a\u003e and copy the \u003ccode\u003e.fap\u003c\/code\u003e to your microSD if you sideload.\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003cspan\u003e\u003cb\u003ePower on and open the app.\u003c\/b\u003e The PWR LED on the board should light. Counts and the graph appear on the Flipper screen. For dice \/ random numbers, install \u003ca href=\"https:\/\/github.com\/nmrr\/flipperzero-atomicdiceroller\" target=\"_blank\" rel=\"noopener\"\u003eAtomic Dice Roller\u003c\/a\u003e the same way — nmrr documents the same board connection for both apps.\u003c\/span\u003e\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003cdiv class=\"sechead\"\u003e\/\/ 03 · Compatibility\u003c\/div\u003e\n  \u003ch2\u003eBuilt for Flipper Zero. Not a standalone meter.\u003c\/h2\u003e\n  \u003cdiv class=\"compat\"\u003e\n    \u003cdiv class=\"yes\"\u003e\n      \u003cdiv class=\"clbl\"\u003eWorks with\u003c\/div\u003e\n      \u003cul\u003e\n        \u003cli\u003eFlipper Zero (host device, sold separately)\u003c\/li\u003e\n        \u003cli\u003eGeiger Counter app by nmrr\u003c\/li\u003e\n        \u003cli\u003eAtomic Dice Roller app by nmrr\u003c\/li\u003e\n        \u003cli\u003eBeta (β) and gamma (γ) detection as specified\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"no\"\u003e\n      \u003cdiv class=\"clbl\"\u003eNot a fit for\u003c\/div\u003e\n      \u003cul\u003e\n        \u003cli\u003eUse without a Flipper Zero — this is an expansion, not a standalone instrument\u003c\/li\u003e\n        \u003cli\u003eMedical diagnosis, personal dosimetry, or legal dose records\u003c\/li\u003e\n        \u003cli\u003eAlpha (α) work — this listing specifies β and γ only\u003c\/li\u003e\n        \u003cli\u003eCardputer, M5Stick, or other non-Flipper hosts\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"tag\" style=\"margin-top:12px\"\u003eApps are community software. PINGEQUA supplies the hardware module. Firmware forks and catalog builds change; if an app does not detect the board, reseat the header and confirm you installed the nmrr titles linked above.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003cdiv class=\"sechead\"\u003e\/\/ 04 · Specifications\u003c\/div\u003e\n  \u003ch2\u003eThe facts we will stand behind.\u003c\/h2\u003e\n  \u003cdiv class=\"tag\"\u003eOnly listed, observed, or store-policy fields. No invented sensitivity, energy range, or certification numbers.\u003c\/div\u003e\n  \u003ctable class=\"spec\"\u003e\n    \u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eDetector\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eTube\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003eJ305 Geiger-Müller\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eRadiation types\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003eBeta (β) and gamma (γ)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eNot specified for\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003eAlpha (α); medical or legal dosimetry\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eHost \u0026amp; software\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eHost platform\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003eFlipper Zero — host not included\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eInterface\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003eFlipper Zero GPIO header\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eCount \/ graph app\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003eGeiger Counter (nmrr)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eRandom-number app\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003eAtomic Dice Roller (nmrr) — event-timed entropy\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eOn-board indicators\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003ePWR and DET LEDs (visible on product photos)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eProduct\u003c\/td\u003e\u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eSKU\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003ePQ-GEIGER-FZ\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eVendor\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003ePINGEQUA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eIntended use\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003eEducation, development, authorized testing\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd class=\"k\"\u003eShipping weight\u003c\/td\u003e\n      \u003ctd class=\"v\"\u003e80 g\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003cdiv class=\"sechead\"\u003e\/\/ 05 · In the box\u003c\/div\u003e\n  \u003ch2\u003eWhat ships.\u003c\/h2\u003e\n  \u003cdiv class=\"compat\"\u003e\n    \u003cdiv class=\"yes\"\u003e\n      \u003cdiv class=\"clbl\"\u003eIncluded\u003c\/div\u003e\n      \u003cul\u003e\n        \u003cli\u003e1 × Geiger Counter Module with J305 Geiger-Müller tube\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"no\"\u003e\n      \u003cdiv class=\"clbl\"\u003eNot included\u003c\/div\u003e\n      \u003cul\u003e\n        \u003cli\u003eFlipper Zero host device (shown for reference)\u003c\/li\u003e\n        \u003cli\u003eRadioactive check source\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003cdiv class=\"sechead\"\u003e\/\/ 06 · Honest limits\u003c\/div\u003e\n  \u003ch2\u003eWhat this module is — and what it is not.\u003c\/h2\u003e\n  \u003cdiv class=\"tag\"\u003eOverpromising creates refunds. Here is the actual boundary.\u003c\/div\u003e\n  \u003cul class=\"limits\"\u003e\n    \u003cli\u003e\n\u003cb\u003eNot a medical or dosimetry instrument.\u003c\/b\u003e A J305 hobby tube on an expansion board is for education and experiments. It is not a calibrated survey meter. Do not use it for diagnosis, workplace dose records, emergency response, or any safety-critical decision.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eBeta and gamma only, as specified.\u003c\/b\u003e This listing does not claim alpha (α) detection. Glass J305 tubes are the wrong tool if you need alpha.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eCounts are not a legal dose.\u003c\/b\u003e Community apps may offer extra units. Those conversions are unofficial. Trust the event count as a teaching signal, not a certified µSv\/h reading.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eBackground ticks are normal.\u003c\/b\u003e A live tube in a quiet room still clicks. That is the environment, not a defect.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eThe Flipper is the display.\u003c\/b\u003e There is no separate readout panel on the module. If the app is not installed or the board is unseated, you will not see counts.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eHost device not included.\u003c\/b\u003e You need a Flipper Zero you already own.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003cdiv class=\"sechead\"\u003e\/\/ 07 · FAQ\u003c\/div\u003e\n  \u003ch2\u003eReal questions, straight answers.\u003c\/h2\u003e\n  \u003cdiv class=\"body\" style=\"margin-top:8px\"\u003e\n    \u003cdetails class=\"pq-faq-first\"\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.00\u003c\/span\u003eWhat is this for, and is the host included?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eFor education, authorized research, and interoperability testing only. The host device is not included. See \u003ca href=\"\/pages\/compliance\"\u003eCompliance \u0026amp; Responsible Use\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.01\u003c\/span\u003eWhat is the PINGEQUA Geiger Counter Module for Flipper Zero?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eA compact J305 Geiger-Müller expansion board for Flipper Zero. It detects beta (β) and gamma (γ) events and is used with the community Geiger Counter app (credit to nmrr). The Flipper Zero host is not included. SKU PQ-GEIGER-FZ. Price $88.80 USD.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.02\u003c\/span\u003eWhat radiation types does it detect?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eBeta (β) and gamma (γ), as specified on this listing. It is not specified for alpha (α) detection.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.03\u003c\/span\u003eIs this a medical device or a calibrated dosimeter?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eNo. It is an educational \/ development expansion that uses a J305 hobby Geiger-Müller tube. It is not a medical instrument and is not sold for personal dosimetry, workplace dose records, or emergency response.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.04\u003c\/span\u003eWhich Flipper apps work with it?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eThe Geiger Counter app by nmrr, for live counts and a graph on the Flipper screen. Atomic Dice Roller, also by nmrr, uses the same board connection and turns detection-event timing into true random numbers for dice or coin results.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.05\u003c\/span\u003eIs the Flipper Zero included?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eNo. This product is the expansion module only. You need a Flipper Zero you already own.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.06\u003c\/span\u003eDoes the module have its own display?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eNo. Counts and graphs appear on the Flipper Zero screen inside the Geiger Counter app. The board itself has PWR and DET LEDs.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.07\u003c\/span\u003eHow do I set it up?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003ePower the Flipper off, seat the module on the GPIO header, install the nmrr Geiger Counter app from the Flipper app catalog or GitHub, then power on and open the app. For random numbers, install Atomic Dice Roller the same way.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.08\u003c\/span\u003eHow does Atomic Dice Roller generate random numbers?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eIt hashes the timestamps of radiation detection events from the Geiger board. That is physical entropy from β\/γ ticks, not a software pseudo-random generator. Credit to nmrr. A check source is not required; background events work, but a quiet environment collects ticks more slowly.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003e\u003cspan class=\"qn\"\u003eQ.09\u003c\/span\u003eHow long does shipping take, and what is the warranty?\u003c\/summary\u003e\u003cdiv class=\"ans\"\u003e\u003cp\u003eWe dispatch in 1–3 business days from Dongguan \/ Shenzhen. Free tracked shipping from $29.99 USD ($34.99 in the EU). Typical transit after dispatch is 7–10 business days to the US, Canada, the UK, and the EU. 14-day returns for unused items in original packaging. 6-month limited warranty against manufacturing defects. Host device is not included.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"legal\"\u003e\n  \u003cb\u003eFor education, development, and authorized testing only.\u003c\/b\u003e This is not a medical device and is not a calibrated dosimeter. Do not use it to diagnose, treat, or monitor any medical condition, to certify workplace or public dose, or to make safety-critical decisions. The J305 tube on this board is a hobby \/ educational detector for beta and gamma events. Community apps (Geiger Counter and Atomic Dice Roller) are maintained by nmrr; PINGEQUA is not the author of those apps. End users are solely responsible for local law, including rules on radioactive materials and radiation-emitting or radiation-detecting equipment. Sold as-is for the stated use. “Flipper Zero” is a trademark of Flipper Devices Inc.; this is an independent companion product and is not affiliated with or endorsed by Flipper Devices.\n\u003c\/div\u003e\n\u003cdiv class=\"sig\"\u003ePINGEQUA · \u003ca href=\"https:\/\/www.pingequa.com\" target=\"_blank\" rel=\"noopener\"\u003epingequa.com\u003c\/a\u003e · \u003ca href=\"https:\/\/www.pingequa.com\/pages\/compliance\" target=\"_blank\" rel=\"noopener\"\u003eCompliance\u003c\/a\u003e · \u003ca href=\"https:\/\/github.com\/nmrr\/flipperzero-geigercounter\" target=\"_blank\" rel=\"noopener\"\u003enmrr \/ Geiger Counter\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is the PINGEQUA Geiger Counter Module for Flipper Zero?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A compact J305 Geiger-Müller expansion board for Flipper Zero. It detects beta (β) and gamma (γ) events and is used with the community Geiger Counter app (credit to nmrr). The Flipper Zero host is not included. SKU PQ-GEIGER-FZ. Price $88.80 USD.\"}},\n{\"@type\":\"Question\",\"name\":\"What radiation types does the PINGEQUA Geiger Counter Module detect?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Beta (β) and gamma (γ), as specified on the product listing. It is not specified for alpha (α) detection.\"}},\n{\"@type\":\"Question\",\"name\":\"Is the PINGEQUA Geiger Counter Module a medical device or calibrated dosimeter?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. It is an educational and development expansion that uses a J305 hobby Geiger-Müller tube. 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You need a Flipper Zero you already own.\"}},\n{\"@type\":\"Question\",\"name\":\"Does the PINGEQUA Geiger Counter Module have its own display?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Counts and graphs appear on the Flipper Zero screen inside the Geiger Counter app. The board itself has PWR and DET LEDs.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I set up the PINGEQUA Geiger Counter Module?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Power the Flipper off, seat the module on the GPIO header, install the nmrr Geiger Counter app from the Flipper app catalog or GitHub, then power on and open the app. For random numbers, install Atomic Dice Roller the same way.\"}},\n{\"@type\":\"Question\",\"name\":\"How does Atomic Dice Roller generate random numbers on Flipper Zero?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It hashes the timestamps of radiation detection events from the Geiger board. 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