Do not let ceiling heights stop you from achieving smart lighting throughout your entire home. With the HALO Home RL4 Lumen Select recessed downlight, you can adjust the lumen output for optimal lighting in any room. Select from 600 to 900 lumens for mounting heights up to 12 feet. All you need to set it up is a Bluetooth-enabled device and the free HALO Home app; unlike other systems, there.s no internet connection or .hub. required. Once installed, you.ll be able to easily control and program the lighting from your mobile device.from color temperature fine-tuning and dimming to set the mood, to automatic scheduling and even voice control (via Amazon Alexa or Google Assistant, when you add the Internet Access Bridge - sold separately). And with a wide range of HALO Home indoor/outdoor fixtures and accessories to choose from, you can expand and customize your smart lighting to your heart.s content.