Based on this product's specifications, here are some alternatives and similar models
Short-throw projector BenQ LK835ST — DLP 4K (4096×2400), 4000 ANSI lumens, laser, throw ratio 0.69–0.83, motorized focus, black
Summary description:
BenQ LK835ST is a short-throw DLP laser projector with native 4K (4096×2400) resolution and 4000 ANSI lumens brightness. It offers a throw ratio of 0.69–0.83 and 102.5% vertical offset, motorized focus, and a long laser lifespan (20,000 h standard, 30,000 h in eco). Supports common video and graphics modes and includes RS-232 and HDMI 1.4a for professional installations, suitable for classrooms, meeting rooms and small auditoriums.