The Lindy 150m Bi-Directional IR signal extender is a high quality, reliable solution for transmitting infrared signals from IR remote controls up to 150m in open spaces. This allows the control of AV equipment in home, office, and retail spaces from convenient locations, through walls and ceilings, with no need for costly cable infrastructure.Each transceiver's low power requirement through the USB interface and small form factor ensures simple and discreet professional installations.The transceiver features a rotary dial used to select a vacant radio frequency channel to avoid interference from other IR devices, or create multiple configurations in the same space. This feature also allows one to one, one to many and many to many bi-directional systems to be set up with ease.Compatibility with Alexa, Google Home and Logitech Harmony allows for integration with other home automation products, meaning users can use speech to send instructions to compatible AV devices and create a complete smart-home experience.Please Note: one unit is included.Actual distances will vary depending on the construction of the building and any walls or floors that stand between the transceiver units.