Note 1. This device is only suitable for 4-wire motors. Please check that your motor has 4 wires. (Motor not included, need to be purchased separately) 2. The switch is connected to the electric tubular motor, and the motor must be connected to the neutral wire. 3.The switch is only suitable for 100-240V AC motors (motors are not included, which need to be purchased separately), not for 5-24V DC motors 4. To protect the motor, please keep the manual switch on the wall in the "STOP" position before using the App to control the blinds. 5. Heavy metal blinds with limited material are not suitable for calibration. 6. In order to ensure the stability of the remote control, do not use other brands of remote control, please buy our curtain remote control. (The remote control needs to be purchased additionally) Main feature: --[WIFI+RF433 remote control] can be controlled by tuya APP, voice speaker, and the curtain switch module has built-in RF433 frequency, and the remote control can open, close and pause the curtain. The actual distance of the remote control is about 50 meters, and the actual distance depends on the obstacles. --Multiple combinationsThrough the pairing signal, multiple remote controls can control one curtain module, or one remote control can control multiple curtain modules --[Wifi+Bluetooth Dual Mode] Connect to the network faster. Connect to the network 2 times faster than only Wifi --Curtain opening percentage control and precise calibration function - Curtain opening percentage can be defined by percentage bar and voice control. Motor roll direction can also be set, as well as precise calibration. --Voice Control- Compatible with amazon alexa echo, google home, etc., the simple commands of voice control curtain switch adjust the opening and closing of curtains. --[Group function] - Multiple curtain switches in different rooms can be set in groups to realize group control function. --[Linkage function] - It can be linked with other switch modules, sensors and electrical appliances in the home to create different scenes, such as sleep mode, work mode, dinner mode, home mode, etc. --[Family sharing function] - You can share the switch to family members with limited permissions, and create a smart home together with your family. --Countdown and Timing FunctionsThe curtain switch can be counted down and timed respectively to maximize the intelligence and DIY your daily life. --[MINI body] can be directly installed in the switch bottom box, and can be connected to the original mechanical switch of the curtain motor Main specifications of the breaker: Input Voltage: 100-240V 50/60Hz Power load: 500W (max) WiFi Standard: 2.4GHz 802.11 b/g/n Working frequency: 433.92MHZ Working temperature: -10 + 40 App Name: Tuya Smart / Smart Life Size: 59*42*20mm Distance: 100M (open distance)