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Panel Guard
★★★★★ 4.8 · 7,359 verified reviews
◆Works with nobody home. No power, no wiring, no app — heat inside the box triggers it.
◆Clips in under 60 seconds. 35mm DIN rail clip or industrial adhesive backing.
◆10 years, zero maintenance. Nothing to charge, pair or replace.
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◆ The problem nobody looks at
The fire starts in a box nobody opens.
A loose lug heats up for months. No smoke, no smell, no sound. By the time a hallway detector reacts, it's in the wall cavity.
Your smoke alarm measures a room. The fire is inside a sealed steel box.
Your extinguisher needs a hand. At 3 a.m. there isn't one.
Your panel was sized for a 1990s house. Then came the EV charger, the inverter, the home battery.
Your electrician needs an hour. This takes 60 seconds.
STEP 1
Open the box
Power down and take the cover off. Not comfortable in a live panel? Hand it to your electrician.
STEP 2
Clip it in
Snaps onto 35mm DIN rail, or sticks flat with the adhesive backing where there's no rail.
STEP 3
Forget about it
10 years of standing guard. Nothing to check, charge or update.
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◆ The honest comparison
Everything else in your house waits for you to be there.
| PanelGuard | Smoke alarm | Extinguisher | |
|---|---|---|---|
| Detects inside the enclosure | ✓ | ✗ | ✗ |
| Acts without a person | ✓ | ✗ | ✗ |
| Works while you sleep | ✓ | Alerts only | ✗ |
| Works when nobody is home | ✓ | ✗ | ✗ |
| Needs power, wiring or an app | No | Battery | Servicing |
| Protects rooms and people | ✗ | ✓ | ✓ |
This is a box device, not a house device. Keep your smoke alarms and extinguishers — this covers the layer they were never designed for.
Specifications
170°C
Thermal trigger point
Dual
Nozzles, both ends
10 yr
Stated service life
0.1–0.3m³
Coverage by unit size
−50/+90°C
Operating range
0 W
No power, no wiring
Derek K.
★★★★★
Added a Level 2 charger and the electrician said the box was running warmer than he'd like. He clipped one in while he was already in there — thirty seconds, and I stopped thinking about it.
Anita M.
★★★★★
I work nights and there's an e-bike on charge in the garage. Ordered the four-pack — main panel, garage sub, charger box, meter box.
Ray T.
★★★★★
A bad termination doesn't announce itself, it just gets warmer every month. This doesn't replace proper protection, but in a sealed box it beats the nothing that's in there now.
Important: This is a supplemental fire suppression device intended for small, sealed enclosures only. It is not a listed fire protection system and not a substitute for smoke alarms, fire extinguishers, or professionally designed fire protection. It does not protect rooms, buildings or occupants. Follow all local electrical codes; if you are not qualified to work inside an electrical enclosure, have a licensed electrician install it.