Pet immunity is a stated weight limit, and it is measured at floor level · review
The only detector here that runs on USB-C indefinitely, and the only one that says what it does after the alarm starts.
The conclusion The one standalone siren here that can run on permanent power rather than cells — and TECKNET makes a point of saying USB-C will not recharge them, which is the misunderstanding every buyer would otherwise make. Three volume levels, a 360-degree body, a chime mode and the only published siren duration on the shelf. Read the headline carefully: 328 feet is the remote, and the detector sees 16 to 26.
No pet immunity weight. No mounting height. No IP rating.
Not the detection.
The detection range is sixteen to twenty-six feet, in a different bullet.
Two other products on this shelf lead with 328 and 300 feet, and in both cases it is a radio distance to a receiver.
None of the three sees down a driveway. The longest detection range on this shelf is forty feet claimed, and thirty-two feet stated plainly.
A battery siren in a garage fails silently.
This is the only standalone siren here that can be left on permanent power, which removes the one maintenance task these products have.
And TECKNET then says the thing a buyer would otherwise assume wrongly: USB-C powers the unit and does not recharge the cells.
Cable for a workshop. AAA cells for a van. Not both working together.
The only after-the-alarm statement on this shelf.
Two minutes of a hundred and twenty-five decibels moves an opportunist, and is short enough that a false trigger at three in the morning does not ruin a street.
It also means someone who waits it out gets silence.
The contact alarms elsewhere on this site that run until the opening closes do not leave that gap. For a garage, the trade is reasonable.
Which makes one unit serve three rooms.
A hundred and twenty-five decibels in a hallway is intolerable. Eighty is a doorbell.
One of two detectors here with a volume choice.
On sale at around $25 on the American Amazon store at the time of checking.
Prices and availability are what Keepa reported on the date this page was updated; both move.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
| Detection | Approximately 16–26 ft over a 120° field of view — stated, with the caveat that range varies with installation height, angle and environment. The body rotates 360° so the field can be aimed down a hallway without moving the mount |
|---|---|
| Volume | Three levels — 80 dB, 100 dB or 125 dB — with a flashing strobe. It is one of only two detectors here with selectable volume, and 125 dB is the loudest on this shelf |
| Trigger | In Alarm Mode the siren sounds continuously for 2 minutes and then returns to standby — stated. It is the ONLY statement on this shelf of what happens after the alarm starts, and it is also the limitation: two minutes can be waited out, where a contact alarm elsewhere on this site runs until the opening closes |
| Power | AAA cells for portable use OR USB-C for continuous indoor power — and TECKNET states plainly that USB-C powers the unit and does NOT recharge the cells. It is the only mains-capable standalone siren on this shelf, and the only one that heads off that misunderstanding |
| Modes | Two: Alarm Mode for security and Doorbell Chime Mode for visitor or motion alerts — stated, switchable from the remote |
| Remote | Included, working up to 328 ft in open areas, to arm, disarm, switch modes or trigger an SOS alarm without approaching the unit. NOTE: 328 ft is the REMOTE'S range, not the detection range, which is 16–26 ft |
| Mounting | Adhesive pad or screws, or stood on a flat surface, or used inside a vehicle — stated. Primarily for indoor use |
| Pet immunity | Not published as a weight. TECKNET states PIR sensing with intelligent signal analysis to distinguish human movement from environmental interference, which is an adjective where this shelf asks for a figure |
| System | No Wi-Fi, no app, no hub and no phone alert — stated. Everything happens at the unit and on the remote |
| Amazon reference | B0FLXV3M4K |
| EAN | 5056243642038 |
No, and this is the most important thing to understand about three listings on this shelf. The 328 feet is how far the remote control works in open air. The detection range is 16 to 26 feet, stated in a different bullet. Two other products here lead with a similar figure — 328 feet and 300 feet — and in both cases it is a radio distance to a receiver, not a sensing distance. If you want a detector that sees down a driveway, none of them do: the longest detection range on this shelf is 40 feet claimed, and 32 feet stated plainly.
Because a battery siren in a garage is a device that fails silently. TECKNET is the only standalone siren on this shelf that can be left on permanent power, which removes the one maintenance task these products actually have — and it then does something unusually honest by stating that USB-C powers the unit and does not recharge the cells, which is exactly the assumption a buyer would otherwise make. Fit it with the cable for a workshop, or with AAA cells for a van, and do not expect the cable to top anything up.
Standby, and a second crossing starts it again. That is the only after-the-alarm behavior anybody on this shelf publishes, and it is worth knowing both ways: two minutes of 125 dB is enough to move an opportunist and short enough that a neighbor will not complain about a false trigger at three in the morning. It also means someone who waits out the noise gets silence — the contact alarms elsewhere on this site that run until the opening closes do not have that gap. For a garage or a storeroom the trade is reasonable.
Between security devices of the same category and nearby price. Shown: what they all state. A half-filled column says nothing.
| Model | Price | Detection | Pet immunity |
|---|---|---|---|
| TECKNET HHA01001WA01 indoor motion sensor alarm, 125 dB, 328 ft remote | $25 | Approximately 16–26 ft over a 120° field of view — stated, with the caveat that range varies with installation height, angle and environment. The body rotates 360° so the field can be aimed down a hallway without moving the mount | Not published as a weight. TECKNET states PIR sensing with intelligent signal analysis to distinguish human movement from environmental interference, which is an adjective where this shelf asks for a figure |
| BESTOONE MSA-21 motion sensor alarm, 2 sensors and 1 receiver | $25 | About 20 ft of infrared detection distance — stated, and stated in the SAME bullet as the 300 ft radio range and distinguished from it. That is the clearest handling of the two figures on this shelf, where three listings lead with a radio distance and one publishes no detection range at all | Not published, in any form. No weight, no sensitivity and no mention of animals |
| CPVAN CP2 Pro motion sensor alarm, 125 dB, 328 ft remote | $25 | Up to 40 ft, with best performance typically within 10–26 ft — stated, and that qualification is the most useful sentence on this shelf. A PIR's rated maximum is a laboratory figure for a warm body crossing the field; the working range is always shorter, and CPVAN is the only listing here that publishes both numbers | Not published as a weight. CPVAN states PIR sensing that helps identify human movement and reduce unwanted triggers, which is an adjective |
| eufy Security T8910021 motion sensor, 100° × 30 ft | $25 | 100° field of view up to 30 ft — stated as more than enough to secure an entire room. Thirty feet is the longest range among the app-based sensors on this shelf, and a hundred degrees is the narrowest angle published on this shelf, against the hundred and ten of the wired panel detector here and two others at a hundred and twenty | NOT published as a weight. eufy states adjustable sensitivity so that it only alerts when humans are in range rather than a playful pet dog or cat — which is a setting, not a limit. This shelf's introduction and this shelf's tag both say pet immunity is a stated weight, and only at least one of the thirteen detectors here gives one |
Details checked on October 8, 2026.
A garage, a van or a storeroom with a USB socket, where a two-minute 125 dB siren is the whole plan
Amazon reports what buyers took in the month before this page was last checked: at least 200.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for home security products and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
4–5 m (13 to 16 ft) × 110° PIR · 110 dB · 58 melodies, 5 volumes · 20 sensors per receiver
A driveway alarm expandable to twenty sensors on one receiver, with 58 melodies and five volume levels. BITIWEND states a 4 to 5 meter (13.1 to 16.4 ft) detection range across 110 degrees.
Best for: A property with several entrances that should each announce themselves differently.
Standalone PIR · 125 dB · remote control · low-battery warning · not compatible with the CP8
A standalone PIR alarm with a remote, from a maker with a decade in detection. CPVAN states a low-battery warning that ticks periodically, and is explicit that the CP2 does not work with its Wi-Fi CP8.
Best for: A shed, garage or storeroom where the alarm should warn you before its battery dies.
Two sensors and one alarm unit · 300 ft radio to the receiver, detection about 20 ft — both published, and labeled · 38 ringtones with 3 volumes AND A SILENT LED-ONLY MODE, the only silent option on this shelf · 2 sets of mounting screws · AAA not included · not waterproof
The only detector here with a silent mode — a light and no sound — and one of the few that separates its radio range from its detection range on the same page.
Best for: A household with a sleeping baby or a shift worker, where the alert must be visible and not audible
≈ $25
