All bulbs are tested before shipment. Excellent return service with feedback within 12 hours. Installation and safety - Easy to install into your projector, similar to removing your old lamp. - Check the connector and ensure it is firmly connected. - It is not electric; shut down your projector during installation. Compatibility - If the new bulb does not work, this is usually caused by mismatched production parameters. - Our engineers address this by continuously collecting large data sets and conducting thorough testing to resolve compatibility issues. Performance and design - Optimized burner design allows any burn-in position. - Provides very stable light output; high luminance degrades only slightly over the lifetime. - Long life: typically between 2500 and 4500 hours of operation. Key benefits - Reliable, pre-tested bulbs for projector replacement. - Clear guidance on installation and safety to prevent issues. - Proactive compatibility support from engineers to reduce failed starts. - Consistent brightness and long-lasting performance for extended use. Use scenarios - Home theater: replace projector lamps for movie nights with steady brightness and reliable operation. - Office and classroom presentations: maintain clear, even illumination during meetings, lectures, and training sessions. - Events and displays: ensure consistent visual quality for exhibitions, galleries, or public demonstrations. Notes - Please double-check your projector model and connector compatibility before installation. - Always power off the projector before installing or replacing the bulb.