10mm White LED Indicator — 10-Pack Key benefits Bright, steady indicator light for clear visual feedback in low-voltage systems. Ready to install with built-in resistor so you can connect directly to DC 3-6V without adding external resistors. Low power consumption and stable performance for longer runtime and reliable operation. What’s included 10 × 10mm LED bulbs with white clear lens Each unit has a 20 cm long flexible lead wire (red = positive, black = negative) Specifications Size: 10 mm LED with white clear lens Drive voltage: DC 3–6 V Lead wires: 20 cm flexible wire; red for positive, black for negative Built-in resistor for suitable operation within specified voltage range Package quantity: 10 pieces Compatibility and function Designed for low-voltage DC applications (3–6 V). Suitable for direct connection to 3 V, 5 V, and 6 V systems. Works as an indicator/status LED, panel light, or small-area illumination in electronics and hobby projects. Simple polarity: connect red to +, black to −. Practical use scenarios DIY electronics and microcontroller projects: use as power or status indicators on Arduino (5 V) or Raspberry Pi (3.3 V with tested operation within range). Model making and RC lighting: install in model trains, scale vehicles, or custom RC builds powered by 3–6 V battery packs for compact, discreet illumination. Instrument panels and small appliances: add reliable indicator lights for switches, control panels, or hobby dashboards operating in the 3–6 V range. Installation tips Confirm system voltage is within DC 3–6 V before connecting. Observe polarity: red = positive, black = negative. No external resistor needed when used within the specified voltage range. For voltages outside DC 3–6 V, use appropriate current-limiting components. Reliable, compact, and easy to use — ten ready-to-install 10mm white LEDs for low-voltage indicator and lighting needs.