It is an Built-in 36 pcs 850nm LED IR booster / Light Extender. It will double an illumination from 1~4x for your existing IR scouting camera whatever you bought it from us or any other manufacturers. Configured with an IR sensor on the booster that it will detect IR light from master camera to trigger this booster to work with any kinds of IR camera synchronously. Yo can install upto 4 pc booster in a chain connection for getting up to 4X illumination on the target at night.