Loud outside, visible from the street, and awkward to reach · review
The only siren here that ties its decibel figure to a voltage and admits the figure drops — and the only one you can measure its own claims against.
The conclusion The most useful page on this shelf: 120 dB tied to 12 V with the honest note that lower voltage means fewer decibels, 320 mA of actual draw, and the only physical dimensions anybody here publishes. Those are the three figures an installer wants. It also contradicts itself — 15 W claimed against 3.84 W of measured draw — and like every siren left on this shelf it has no tamper switch, no backup battery and no strobe.
No tamper switch. No backup battery. No strobe. No measuring distance.
Which nothing else here does.
A hundred and twenty decibels at twelve volts. Lower voltage, fewer decibels, in the maker’s own words.
Every siren on this shelf accepts a voltage range. A horn given six volts has a quarter of the power, and a panel output that sags under load, or a long thin cable, takes decibels off what you bought.
This shelf’s introduction adds the other variable: the figure is quoted at one meter and falls quickly with distance.
Between the two, the number on the box is a ceiling.
Both numbers are on the page.
Twelve volts at three hundred and twenty milliamps is 3.84 watts.
Fifteen watts at twelve volts would draw 1.25 amps — nearly four times the stated current.
The honest reading: 15 W is a nominal rating copied from a product family, and 320 mA is the measured draw.
The measured draw is the one that matters, because it decides whether a panel’s siren output can carry it.
Another siren on this shelf has the same contradiction, at a factor of eight.
The only dimensions on this shelf.
Four inches by four point two. Which decides whether it fits under the eave or inside the enclosure you planned.
Which is what this shelf became after step 0.
This shelf’s introduction compares tamper switches, backup battery, strobe visibility and pairing range.
No cover switch to fire when it is prised off the wall. No battery to keep sounding when the cable is cut. No strobe to tell the street which house. Nothing to pair, because it is wired.
It is a replacement horn for a panel that has those things. At twelve dollars, that is what it should be.
On sale at around $12 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.
| Sound level | 120 dB at 12 V DC — stated, with the qualification "low voltage would be low Db". It is the ONLY listing on this shelf to tie its decibel figure to a supply voltage and to say that the figure falls when the voltage does, which matters because all four sirens here accept 6 V upwards. No measuring distance is given, and this shelf's introduction says the stated level is quoted at one meter and falls quickly with distance |
|---|---|
| Voltage | DC 6 to 13 V, stated. The power adapter is NOT included, stated — this is a horn for an existing panel, not a product that works on its own |
| Current | 320 mA at 12 V DC, stated. It is the only working current published on this shelf, and it is the figure an installer needs to size a supply or check a panel output. It also contradicts the stated wattage: 12 V at 320 mA is 3.84 W, not 15 W |
| Power | 15 W rated, stated — against the 3.84 W its own current and voltage figures give. Both numbers are on the same page |
| Dimensions | 106 × 102 mm (4 × 4.2 in) — stated, and the only dimensions on this shelf. On a horn that has to fit under an eave or inside a panel enclosure, that is the figure that decides whether it goes where you planned |
| Material | ABS flame-retardant shell on an iron bracket, stated, with a red anode wire and a black cathode wire named. Flame retardant matters on a device wired into a mains-derived supply |
| Tones | One tone, stated. The two-tone and two-sound sirens on this shelf offer a choice; this does not |
| Tamper | NONE. This shelf's introduction calls tamper protection — a switch that fires the alarm when the cover is opened or the unit is prised off the wall — what stops a siren being silenced first. No siren on this shelf has one |
| Backup battery | None, and no strobe. All four sirens on this shelf are bare horns fed from the panel |
| Amazon reference | B07P1FNJTG |
| EAN | 4617676514043 |
Because every siren on this shelf accepts a range of voltages and only this one admits what that does to the sound. A horn rated 120 dB at 12 V is substantially quieter at 6 V — the driver is being given a quarter of the power — and a panel whose siren output sags under load, or a long thin cable run that drops a volt or two, takes decibels off the figure you bought. This shelf's introduction notes that the stated level is quoted at one meter and falls quickly with distance; this listing adds the other variable, and nobody else on the shelf does.
Three point eight four, on the page's own figures. Twelve volts at 320 milliamps is 3.84 watts, and both numbers appear in the same description as the 15 W rating. Fifteen watts at 12 V would draw 1.25 amps, nearly four times the stated current. The honest reading is that 15 W is a nominal or peak rating copied from a product family and 320 mA is the measured draw — and the measured draw is the one an installer needs, because it decides whether a panel's siren output can carry it. Another siren on this shelf has the same contradiction at a factor of eight.
All four things this shelf exists to compare besides the volume. This shelf's introduction lists tamper switches, backup battery, strobe visibility and pairing range alongside stated decibels; this is a bare 12 V horn with none of them. No cover switch to fire the alarm when it is prised off, no battery to keep sounding when the cable is cut, no strobe to tell the street which house, and nothing to pair because it is wired. It is a replacement horn for a panel that already has those things, and at twelve dollars that is exactly what it should be.
Between security devices of the same category and nearby price. Shown: what they all state. A half-filled column says nothing.
| Model | Price | Sound level | Power | Tamper | Backup battery |
|---|---|---|---|---|---|
| Tokatuker BT626 wired alarm siren horn, 15 W, DC 6–13 V | $12 | 120 dB at 12 V DC — stated, with the qualification "low voltage would be low Db". It is the ONLY listing on this shelf to tie its decibel figure to a supply voltage and to say that the figure falls when the voltage does, which matters because all four sirens here accept 6 V upwards. No measuring distance is given, and this shelf's introduction says the stated level is quoted at one meter and falls quickly with distance | 15 W rated, stated — against the 3.84 W its own current and voltage figures give. Both numbers are on the same page | NONE. This shelf's introduction calls tamper protection — a switch that fires the alarm when the cover is opened or the unit is prised off the wall — what stops a siren being silenced first. No siren on this shelf has one | None, and no strobe. All four sirens on this shelf are bare horns fed from the panel |
| HQRP Electronic alarm siren, 20 W DC 12 V, 118 dB, with bracket | $12 | 118 dB, stated. No measuring distance appears, and this shelf's introduction says the stated level is quoted at one meter and falls quickly with distance. It is also quoted without a voltage, where one siren on this shelf ties its figure to 12 V and warns that a lower supply gives fewer decibels | 20 W at DC 12 V, stated — the highest wattage on this shelf, and the only one no other figure on its own page contradicts. Two sirens here publish a current that disagrees with their stated watts; HQRP publishes no current, so the 20 W stands uncontested and unverified | None. This shelf's introduction calls tamper protection what stops a siren being silenced first, and no siren on this shelf has it | None. No strobe either, and nothing to pair: this is a wired horn for an existing system |
| QWORK WD8893 electric siren horn, 12 V, 110 dB, 2-pack | $15 | 110 dB, dual tone — stated. It is the lowest figure on this shelf and the only dual-tone horn here: two alternating tones carry further through a house than one steady note, because a changing pitch is harder to ignore and harder to mistake for a vehicle | 15 W rated at DC 6 to 12 V, stated, with low power consumption claimed. No current figure is given, so the 15 W cannot be checked against it — two sirens on this shelf publish a current that contradicts their own wattage | None. This shelf's introduction calls tamper protection what stops a siren being silenced first; no siren on this shelf has one | None, and no strobe. Nothing to pair: these are wired horns for an existing panel |
| FTGear W3Y-DYV-WWO634 outdoor siren speaker, 12 V, two selectable sounds | $26 | 150 dB claimed. Read it against the rest of this shelf: a 20 W horn here claims 118 dB and a 15 W horn claims 120 dB, and thirty decibels is one THOUSAND times the acoustic power. FTGear's own data sheet gives 300 mA at 12 V, which is 3.6 W — less electrical power than either of them. The figure cannot be right, and no measuring distance is given | The page gives "Rated Power: DC12V", "Rated Current: 300mA" and "Rated Power: 30W" in three consecutive lines. Twelve volts at 300 mA is 3.6 W. Thirty watts at 12 V would draw 2.5 amps, eight times the stated current. The two figures cannot both be true | None. This shelf's introduction calls tamper protection what stops a siren being silenced first, and no siren on this shelf has one | None, and no strobe — despite being the only one of the four sold explicitly as an outdoor siren |
Details checked on October 8, 2026.
A wired 12 V panel where the installer wants a current figure before sizing the supply
Amazon reports what buyers took in the month before this page was last checked: at least 50.
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.
85–110 dB · 868 MHz AirShield, to 1,200 m (4 ft) open field · warning light · burglary, fire and panic tones
The outdoor siren for Goliath's AirShield system: 85 to 110 dB with a warning light, three distinct alarm tones, and 868 MHz radio quoted at up to 1,200 m (4 ft) in open field.
Best for: A Goliath system on a property large enough that the hub and the siren are far apart.
100 dB from two piezo speakers · solar with replaceable NiMH pack · outdoor · needs an Access Point
A solar-powered outdoor siren with two piezo speakers at 100 dB and an optical signal, running on a replaceable NiMH pack charged by its own cell. It requires a Homematic IP Access Point and the app.
Best for: A Homematic IP installation where running a cable to the siren is not practical.
≈ $185
120 dB adjustable · strobe · 5000 mAh backup · 433 MHz to 10 hosts, 80 m (262 ft) · tamper protection
HUXGO's larger outdoor siren: 120 dB with adjustable volume and a strobe, a 5000 mAh backup battery, tamper protection, and pairing with up to ten HUXGO hubs.
Best for: A HUXGO system where the siren must survive a long power cut, or where several hubs share one siren.
