Features: 1. Support 2.4G Wifi Communication Protocol; Support Remote Control Pairing And Clearing Functions 2. Yiwelink App Supports Multiple Devices And Adds Functions 3. The Usb Output Port Supports External Power Supply And External Data Output Without Burning. 4. Psf-B01wifi Module; Low Power Consumption And Low Latency; Supports 2.4G Wifi Communication Protocol 5. Strong Signal Penetration And Low Signal Transmission Delay Description: 1. Usb Port: Input Port 2. Psf-B01wifi Single Channel Switch Module 3. Smd Button: Click To Control The Output Port To Open/Close; Long Press For 5s To Add App Device 4. Usb Socket: Output Port 5. 433m Wireless Receiving Module 6. Led Light: D1 Light Is Always On After Power On, And D1 Light Flashes When Adding App Device; D2 Light Is Always On When The Output Port Is Turned On, And D2 Light Is Always Off When The Output Port Is Turned Off. 7. 433m Module Button: Press And Hold For 2s To Pair The Remote Control. After The Indicator Light Flashes 4 Times, The Pairing Is Successful; Press And Hold For 8s, The Indicator Light Will Go Out And All Paired Remote Controls Will Be Cleared. 8. Name: Usb Output Control Module Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Size: About 65 x 50 x 25mm Material: PCB colour: As shown Package Contents: 1 x USB Output Control Module 1 x 433M Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.