Please Note: ZigBee Dimmer Switch requires a ZigBee gateway to function. It cannot be used without one. ZigBee Dimmer Switch Module: APP Remote Control: Control your switch from anywhere, anytime via your phone's app. Voice Control: Simply give a voice command to Alexa or Google Home to control your devices. Timer/Countdown/Schedule: Smart and customizable options to maximize convenience. Stepless Dimming: Adjust your light's brightness from 0% to 100% for various scenes like sleeping, working, movie watching, or parties. Group Control Function: Set multiple dimmer switches in different rooms into a group for synchronized control. Family Sharing Function: Create a smart home experience together with your family members. Easy Installation: Compatible with 98% of standard installation boxes. Material: Plastic Color: Yellow Specification: 2CH Package Contents: 1 x Dimmer Switch (Note: Other products are not included. Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.)