

🚨 Stay ahead of danger with smart, silent vigilance!
The D MODUN Gas Detector is a compact, plug-in device designed to detect natural gas, LPG, and city coal gas leaks with a loud 85dB alarm and a clear LED display showing real-time gas concentration. Its energy-efficient, fireproof ABS design ensures durability and easy installation without batteries, making it perfect for kitchens, RVs, garages, and commercial spaces. Trusted by users for life-saving alerts, it offers peace of mind through advanced semiconductor sensor technology.










| ASIN | B07R7H6QTZ |
| Batteries Required? | No |
| Best Sellers Rank | 21,823 in DIY & Tools ( See Top 100 in DIY & Tools ) 13 in Gas Detectors |
| Colour | White |
| Customer Reviews | 4.3 4.3 out of 5 stars (435) |
| Date First Available | 9 Feb. 2020 |
| Item Weight | 150 g |
| Item model number | BRJ-502 |
| Manufacturer | MODUN |
| Material | ABS |
| Part Number | BRJ-502 |
| Power Source | AC |
| Product Dimensions | 6.9 x 7.2 x 12.1 cm; 150 g |
| Size | 69*72*121mm |
| Style | Compact |
| Wattage | 2 watts |
J**Y
A nice simple safety device
After realizing that my current battery-powered natural gas detector was broken (it even beeped outside!) I decided to try a plug-in. This product is really simple, just take out of the box and plugin. It takes a minute or two to set up but soon after the clear display was '0' telling me I was safe. Nice and reassuring. The instruction booklet states that the gas will collect around the ceiling, the detector is to be placed 30cm below and 1.5 m from the air (a window). This means it might be hard to find a suitable place if you have a really small room. For myself, I probably need to move mine further from the window but I still feel that this product has helped alleviate my worries about natural gas.
C**V
Saved my mum’s life
I bought this for my mum’s new holiday caravan as a new boiler had been installed just before she bought the caravan. Four days after she moved in, the gas alarm went off at 3am. Thankfully it woke her up. The fire brigade said she would have been dead had she not bought the alarm. It was reading a gas level of 4 and climbing due to a boiler installation issue. I can’t rate this product enough.
V**A
Looks good
Brilliant.
M**T
Seems ok easy to use
Seems to be working ok , as it says plug it in
B**K
Life Saver
I purchased this alarm for my 81 year old mum who has lost her sense of smell and has a tendency to knock the gas knobs on her cooker. I was a little dubious about this alarm working from having read the reviews, however, I decided to purchase it anyway as previously, by sheer luck, a family member went to visit mum who had gone to sleep not realising she had knocked the gas knob to ‘on’! So far it has worked brilliantly, whether it takes a little while to detect the gas or not. Being elderly, mum does fall asleep but the alarm has woken her when it’s detected gas. I can truly say it’s saved her life as going by last time, the gas had been on for 4hrs and the fire service had to go in with gas masks to open all the windows and doors with mum having to sit outside for 2hrs before they let her go back in. The most important thing is this device works and if it’s a choice between not having one and having one, I’d certainly opt for the latter.
T**Y
Hope you can read Chinese
Very poor translation from Chinese to English so only guessing if it works or not
T**Y
Possibly just saved our lives!
My husband thought he smelled gas, due to long covid I couldn't confirm this. After a day of his concern I bought the alarm, mainly to reassure ourselves. We used an extension lead to be able to place the alarm at the correct height. Within an hour it was beeping and reading 3. We then moved it to nearer the gas meter and it read 9 after only 45 minutes and beeped like a wild thing. We switched off the gas and called the plumber. (the alarm rapidly set itself back to 0 after the gas was turned off and the area ventilated) A test revealed a huge leak at the meter. Now waiting for the gas company to sort that out. The alarm was excellent and I highly recommend one. But do read the instructions and use it as described. Life saving!
C**E
Would 100% recommend saved our lives!
I bought this and as soon as I plugged it in ( at worktop height) it started to beep . I did in fact have a gas leak after having a new kitchen fitted ( New has hob as well) a few MONTHS previous. Myself and daughter had been feeling ill but couldn't pinpoint why but after having landlord out to fix leak , we are both feeling better. I wouldn't be without one of these in my home now. It has literally saved our lives ( and possibly out neighbours lives too as we live in a small block of flats) 20 quid well spent
L**O
Ho acquistato questo rilevatore di gas della D MODUN per avere maggiore tranquillità in cucina e devo dire che è un prodotto eccellente. L'installazione è immediata: basta inserirlo in una presa di corrente e il dispositivo è pronto a monitorare l'aria. Il display digitale a LED è molto chiaro e permette di visualizzare subito lo stato del sensore. L'allarme sonoro è potente e udibile distintamente in tutta la casa, un fattore fondamentale in caso di emergenza. È molto versatile, perfetto non solo per la casa ma anche per chi ha un camper o un garage con bombole. La qualità costruttiva sembra solida e il design nero è discreto. Un piccolo investimento che regala una grande sicurezza a tutta la famiglia. Cinque stelle meritatissime per l'affidabilità!
M**T
On voit tous les jours dans la presse des histoires de personnes asphyxiées dans leur sommeil, étant équipé en gaz naturel j'ai commandé ce détecteur pour m'assurer qu'il n'y avait de problèmes chez moi ! Le détecteur est basique et je dois avouer que je n'ai ps créé une fuite de gaze chez moi pour le tester. On le branche, on attend qu'il se calibre et voilà ont peut le laisser vivre sa vie et ainsi être alerté en cas de fuite de gaz... N'ayant pas pu le tester en situation réelle mon avis se base uniquement sur mes tests simples avec un briquet à gaz. Je n'avais pas de détecteur avant donc je me dis que si jamais il y a une fuite réelle ce ne sera pas pire qu'avant mais je ne sais pas si je lui confierais ma vie. Bref ça a l'air bien mais je ne sais pas si je jouerais ma vie en jouant avec ce genre d'appareil. je vous laisserai vous faire votre propre avis !
C**R
When I first moved into my home, I could smell gas now and then when the stove was on. I could also smell it in certain areas of the home throughout the day. My home has a gas boiler and gas stove. My partner tried to assure me it was normal for either appliance to release a gas smell when it was turned on. I couldn't shake the nagging feeling it was more than that. On a Friday, after hours of course I had enough and called someone to take a look. He found 2 leaks, one in a burner on the stove, and another in the connection from the wall to the stove. The gas to the house (not just the stove) had to be shut off altogether. We went without a stove for the weekend but I felt relief knowing I wasn't crazy! I wish I had one of these devices then to let me know there was an issue, instead of living with the gas in the environment for several weeks. This is a very easy detector to use. You just plug it in and check to make sure it's working now and then. It has a clear display that indicate the risk factor, and a loud alarm that warns of danger. Thankfully there aren't any batteries required. It doesn't detect CO2, you'll need a separate device for that. Overall for $30 it's reasonably priced and a great lifesaving tool if you have natural gas in your environment.
J**L
Este dispositivo es un detector de seguridad diseñado para identificar fugas de gases combustibles (Gas Natural/Metano y GLP como Propano o Butano). No es un aparato a pilas y requiere estar enchufado a la corriente. Su función es simple, monitorear el aire constantemente y emitir una alarma sonora muy potente si la concentración de gas supera un nivel seguro, mostrando el porcentaje de peligro en la pantalla. Si te preocupa la seguridad de tu casa, este detector es una herramienta preventiva esencial. Diseño y funcionalidad: El dispositivo es bastante compacto, tiene unas medidas de 121 mm de alto x 69 mm de largo x 72 mm de ancho y su construcción es funcional, generalmente en plástico ABS. La pantalla LED es brillante y legible incluso en la oscuridad. La alarma es ruidosa, suele superar los 80 decibelios. Es un sonido estridente y molesto, diseñado precisamente para despertarte si hay una fuga mientras duermes. Es muy importante leer atentamente las instrucciones que vienen con el producto, ya que es vital ubicarlo correctamente a la hora de instalarlo para que sea totalmente eficaz. Si usas Gas Natural: El gas es más ligero que el aire y sube. Se debe instalar cerca del techo (a unos 30-50 cm hacia abajo). Si usas Butano/Propano: El gas es más pesado que el aire y baja al suelo. Se debe instalar cerca del suelo (a unos 30 cm hacia arriba). Si lo colocas mal, la alarma sonará cuando la habitación ya esté llena de gas, perdiendo su eficacia. Puntos fuertes: - Sensibilidad: El sensor suele detectar concentraciones de gas muy por debajo del nivel explosivo (LEL), lo que da tiempo de sobra para reaccionar, cerrar la llave de paso y ventilar. - Señal visual y sonoro: A diferencia de detectores más antiguos que solo pitaban, este modelo incluye una pantalla LED. Ver el número "0" o una cifra baja te da información real sobre la calidad del aire antes de que salte la alarma. - Instalación "Plug & Play": No requiere configuración técnica ni conexión WiFi. Lo sacas de la caja, lo enchufas y empieza a funcionar tras el calentamiento. - Detecta varios tipos de gases: Cubre tanto el gas de tubería (ciudad) como el de bombona (butano/propano), lo que lo hace útil tanto en un piso como en un camping. Puntos débiles: - NO detecta Monóxido de Carbono (CO): Este aparato detecta fugas de gas combustible, pero no el peligrosísimo CO que produce una mala combustión de una estufa, por ejemplo. - Puede dar falsas alarmas: En general este tipo de detectores pueden dar alguna falsa alarma y activar el sensor por cocinar con vino, usas mucho vinagre, laca para el pelo o insecticidas cerca del detector. El sensor químico puede reaccionar a vapores de alcohol o aerosoles fuertes. - Tiempo de calentamiento: Cada vez que se va la luz o lo enchufas, el aparato entra en un modo de "precalentamiento" (conteo regresivo) que puede durar entre 2 y 3 minutos. En resumen, Este detector de gas es una compra muy recomendada (casi obligatoria) para cualquier hogar con instalaciones de gas, cocinas de bombona o para usuarios de caravanas. Cumple lo que promete: avisa fuerte y claro. Por el precio habitual de estos dispositivos, la relación coste-beneficio es inmensa. ¡Deseo que esta reseña te sea de ayuda para que tu compra sea más acertada!
K**A
Ultimamente a casa avevo problemi con il rilevatore fisso che ogni due per tre mi dava allarme però non riuscivo a sentire nulla e non capivo l'anomalia, quindi ho pensato di prendere questo rilevatore di gas fisso da integrarlo per capire se ci fosse un reale problema. L'utilizzo è veramente semplice: l'apparecchio è di plastica nera piuttosto leggera con un piccolo monitor che mostra il valore (se è tutto normale deve essere 0) e basta inserirlo nella presa elettrica. Dopo 2 minuti di calibrazione automatica in cui le spie lampeggiano, l'apparecchio mostra la luce led sul corretto funzionamento e rimane sempre visibile il valore 0. In caso di allarme l'apparecchio suona (state tranquilli si sente eccome quando parte) ed i led inferiori lampeggiano di rosso. Morale della favola: nonostante l'anomalia di quello fisso questo è sempre rimasto a zero e muto anche quando l'altro dava allarme; chiamato l'elettricista per capire che diavolo avesse ed era andato in corto quello! Tutto è bene quel che finisce bene ovviamente, alla fine non c'erano perdite da nessuna parte ma un'anomalia della strumentazione(notevolmente più costosa di questa): non posso che consigliare vivamente strumenti come questo che per la sicurezza famigliare sono fondamentali, soprattutto in inverno quando tutte le finestre sono chiuse ed il pericolo aumenta esponenzialmente.
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