Welch Allyn/Hillrom-04400-U 2.5v Halogen Lamp For 11411

The 04400-U is a halogen replacement lamp used in Welch Allyn / Hillrom ophthalmic / diagnostic instruments (such as ophthalmoscopes). It operates at 2.5 volts and draws about 1.65 watts, delivering clear, consistent illumination suitable for eye examinations. It is a single-ended bulb with a T-1.5 form (T1-1/2) shape. The lamp has a rated life of ~20 hours, and a color temperature of about 3025 K (warm white). Its overall length is approximately 0.75 inches (≈ 19 mm), and the bulb diameter is around 0.19 inches (≈ 4.8 mm).