Meross HomeKit Smart WiFi Garage Door Opener1. Input: Version 2: 90-240V~, 50/60Hz; Version 3/4: 5V 1.0A DC2. Dimensions (W x D x H) : 3.7 x 1.8 x 0.9 in. or 9.4 x 4.6 x 2.3 cm3. Power Cord: 4.9 ft long or 1.5 meters long4. Sensor Wire: 23 ft long or 7 meters long5. Material: ABS V0 flame retardant, deflection temperature is 169 F (at 1.8 MPa)6. Certifications: US/CA: FCC, IC, ETL; EU: CE, RoHS, WEEE7. A small but powerful companion device to your existing garage door opener. Easy to install, usually take 15 mins for the installation. Enjoy smart garage control.8. Turn the garage door on/off from anywhere via the Meross app/Apple Home app. To let in your guests or couriers through the garage while you are not at home. No monthly fee or any other subscription fee.9. The WiFi smart garage door opener (HomeKit Version) works with Apple HomeKit, Siri, CarPlay, Amazon Alexa, Google Assistant, and SmartThings. Use your voice to open/close the garage door. "Hey Siri, open my garage door."10. Compatible with over 200 brands and 1600 different models(98%+ garage door openers in the market). Supported by the latest garage opener models as well as the old garage openers produced in the 1990s.11. Get alerts when your garage door opens, closes, opens for a long time, or is forgotten to be closed at bedtime. Notice: Non-HomeKit version support all the above features besides Apple HomeKit, Siri, CarPlay, and Apple Home app. All in OneVoice ControlRemote ControlTimer Setting Security ProtectionWork with CarPlay