- All bulbs are tested before shipment, and we offer an excellent return service with feedback within 12 hours. - Installation and safety: easy to install into your projector by replacing the old lamp. Ensure the connector is firmly seated. Do not power the projector during installation; shut down and unplug the unit before replacing the bulb. - Compatibility: if the new bulb does not work, it is usually due to mismatches in production parameters. Our engineers continuously collect data and perform tests to address this and improve compatibility. - Optimized burner design: supports any burn-in position and provides a very stable light output. The high luminance remains steady over the lifetime, with only a slight decrease from 2500 to 4500 hours of use. - Applications: - Home theater: replace projector bulbs for clear, reliable movie nights. - Business presentations: maintain bright, consistent projection for meetings and seminars. - Classroom or training room: dependable illumination for lessons and demonstrations.