The MF1U MicroFlasher is an infrered (IR) emitter designed to send infrared signals from a Niles IR System to an attached audio or video (A/V) compnent. These types of IR repeating systems are what allow you to store your A/V components in a remote closet or an equipment rack. One IR emitter will be required for each component you wish to control These emitters feature a flashback LED to confirm the transmission and reception of IR signals. The design is very low profile and easy to blend into your current decor. The new Elastomer style blocking cover makes attaching to curved surfaces easier than ever before. You can forget about your emitters falling off of your components due to weak adhesive. The MF1 has been designed with an improved, much stronger adhesive.