Light Up Key Switch Keychain - White LED

If you have one of our etched glow-through keycaps, this adorable, bite-sized Key Switch Keychain is the perfect accessory to show it off. It's basically a satisfying clicky tactile key switch, with a white LED and a CR1220 battery.

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Environmental Sensors · Sensors

Related groups

4 groups

Air quality

Choose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.

Sensors · Gas & air-quality sensors · 31 parts

Temp and humidity

DHT11, DHT22/AM2302, and DHT20/AHT20 sensors solve the same broad job, but only some are acceptable substitutes in the same circuit.

Sensors · Environment sensors · 19 parts

Environment sensors

Choose between temperature-only, temperature/humidity, pressure and indoor air-quality modules without treating every environmental sensor as a drop-in substitute.

Sensors · Environment sensors · 8 parts

Light and colour

Photoresistors and color sensors both respond to light, but they expose very different signals and are not sensible drop-in substitutes.

Sensors · Light & color sensors · 7 parts