Compatibility: Support 80,000 + RF + IR controlled devices APP Control: Control IR and RF appliances with 'Broadlink' App via internet anywhere anytime, making life smarter and more convenient. Voice Control: Smart universal remote control compatible with Alexa, Google Home to voice control your TV, air conditioner and motor curtain, etc. Updated Version: RM4 Pro is updated from RM Pro. Enhanced 433M radio frequency with emissive power is 3-times stronger than the previous. Timer & All in Your Hand: Set up timers to turn on/off appliances at a specific time. You can set the boot time of TV/Air condition/DVD in advance.