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Device light categories
Start with the device that has the light. Then narrow by color, pattern, brand, or warning type.
Router & Modem Lights
Decode blinking, flashing, red, orange, green, blue, and white lights on routers, modems, mesh systems, and Wi-Fi extenders.
11 starter guidesPrinter Lights
Understand printer warning lights, Wi-Fi lights, paper lights, ink lights, toner lights, and blinking status LEDs.
6 starter guidesSmoke Alarm Lights
Learn what blinking red, green, yellow, and other smoke alarm lights usually mean and when to take action.
3 starter guidesCarbon Monoxide Detector Lights
Safety-first explanations for red, green, yellow, end-of-life, and alert lights on CO detectors.
4 starter guidesAppliance Lights
Troubleshoot blinking and warning lights on washers, dryers, dishwashers, refrigerators, ovens, and other home appliances.
9 starter guidesCar Dashboard Lights
Plain-English explanations for common car dashboard warning lights and what to check first.
4 starter guidesBattery Charger Lights
Decode red, green, yellow, flashing, and solid lights on battery chargers, power banks, and tool chargers.
7 starter guidesSmart Home Lights
Find out what lights mean on smart plugs, smart bulbs, thermostats, doorbells, hubs, and connected devices.
7 starter guidesSecurity Camera Lights
Understand red, blue, green, white, and flashing status lights on security cameras and video doorbells.
5 starter guidesGame Console Lights
Decode blinking and solid lights on PlayStation, Xbox, Nintendo Switch, controllers, docks, and gaming devices.
6 starter guidesTV & Streaming Device Lights
Troubleshoot blinking standby lights, remote lights, and status LEDs on TVs, Roku, Fire TV, Apple TV, and more.
5 starter guidesComputer & Laptop Lights
Understand charging lights, power lights, Caps Lock blink codes, battery lights, and desktop LED patterns.
3 starter guidesPower Tool Lights
Decode charger lights and battery indicator lights on drills, power tools, and rechargeable tool batteries.
2 starter guidesMedical Device Lights
General guidance for indicator lights on CPAP machines, thermometers, monitors, and other home medical devices.
Still not sure what your light means?
Use the resources page to keep narrowing it down by color, blinking pattern, and device type.
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