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Flammable gas leak detector - solid state sensor, 85dB siren, battery backup - Gas Leak Detector

Reviews Flammable gas leak detector - solid state sensor, 85dB siren, battery backup

Interested in reviews of Flammable gas leak detector - solid state sensor, 85dB siren, battery backup? It got 4.3 out of 5 stars from our customers. Find specific customer reviews of Flammable gas leak detector - solid state sensor, 85dB siren, battery backup below. We will appreciate if you also share your experiences with Flammable gas leak detector - solid state sensor, 85dB siren, battery backup after purchasing.

User Reviews

Anonymous customerflag
Rated 21/08/2026, variant Flammable gas leak detector - solid state sensor, 85dB siren, battery backup
Verified purchase
As the user before me wrote, the rechargeable 9V battery is a totally daft idea. After 6 hours of running on the battery, the detector was very warm. The rechargeable battery was too hot to hold. I don't even want to think about what could have happened. I chose it mainly because it has a backup power source as a failsafe in case of a power cut. Without the battery, everything is O.K. Even so, I'm considering returning it. I have even informed the manufacturer.
Price
9V rechargeable battery
Backup in case of power failure
A better way to ruin a battery
Worse version of fire
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Martin, Prahaflag
Rated 19/08/2026, variant Flammable gas leak detector - solid state sensor, 85dB siren, battery backup
Verified purchase
Short version: The device is extremely dangerous when used with a battery, but it's good without one. Long version: The manual says to insert a rechargeable 9V battery into the detector for backup operation. After insertion, the battery is continuously charged with a current of just under 200mA. The charging is PERMANENT and never switches off. This causes the battery to get red-hot until all the electrolyte boils off (the device ruined a new battery of mine). Since the device only cost a few hundred, I took it apart. The charging "circuit" consists only of a 20 Ohm resistor connected to a rectified voltage of approx 14.5V from the power source inside the device. The calculation fits perfectly: (14.5V - 11V overcharged 9V) / 20 Ohm = 175mA. This is not a defect with my particular unit, as confirmed by other reviews. The manufacturer probably fitted a 200 (20 Ohm) component instead of a 202 (2 kOhm) resistor. At 2 kOhm, the charging current would be approx 2mA, which is an ideal, safe trickle charge. Although I replaced the resistor myself, I ran into another problem: backup operation on battery. The device continuously draws about 150mA from the 9V battery (due to the sensor heating up). A standard 200mAh 9V battery thus lasts less than an hour and a half. What's worse - the device has no protection against deep discharge. Once the battery is flat, it will drain it completely to zero, which causes the cells to reverse polarity and destroys the battery. Furthermore, after restoring mains power, the original circuit would pump a current of up to 500mA (14.5V - 4.5V) / 20 Ohm into such a deeply discharged battery, which is an extreme hazard. In my opinion, the device is extremely dangerous when used with a backup battery (risk of battery destruction, electrolyte leakage or fire). However, if you run it completely WITHOUT a battery, just from the 230V mains, it works without any problems. The sensor reacts quickly and with good sensitivity (slight warming of the casing where the sensor is located is normal). I can recommend it without a battery, but definitely not with one.
Reliable and sensitive gas detection when powered from the mains (230V)
Quick sensor response
Dangerous backup battery charging circuit - permanent overcharging with a current of almost 200mA (risk of boiling the battery/fire)
High consumption from the backup battery (~150mA), lasts less than 1.5 hours during a power cut.
Lacks any kind of protection against deep battery discharge.
The backup power from the 9V battery is unusable in practice and will destroy the battery or, in a worse case, cause a fire.
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Petr, Nové Sedloflag
Rated 23/06/2025, variant Flammable gas leak detector - solid state sensor, 85dB siren, battery backup
Verified purchase
Everything is in perfect order.
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Customer, Mostflag
Rated 13/05/2024, variant Flammable gas leak detector - solid state sensor, 85dB siren, battery backup
Verified purchase
Super
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P-DC1-WEB20
30 év tapasztalat az e-kereskedelemben
3 million megrendelés évente
a vásárlók 98% visszatérõ
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