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Emergency lighting systems come in a variety of designs, including self-contained (autonomous) units and central battery systems. Many models are classified as either non-maintained (only turn on when the power fails) or maintained (stay on continuously and switch to battery mode when needed).
These devices are regulated by strict safety standards in most countries and typically include features like:
- LED indicators for battery status
- Manual test buttons
- Fire-resistant housings
- Mounting brackets for surface or recessed installation
Common repair issues include:
- Failing rechargeable batteries
- Damaged or degraded capacitors (e.g., 1.2 µF in certain models)
- Broken LED driver circuits
- Faulty test buttons or switches
Due to their straightforward electronics, many emergency lights are highly repairable, especially older or industrial models with modular components. This makes them great candidates for repair—even for users without advanced electronics skills.