Features: and high quality The remote control uses the EV1527 learning code technology, with each unit having a unique address code to prevent signal interference. Made from fire-resistant ABS material for enhanced safety and design. No wiring required, can be placed anywhere in the room. Includes a strong 3M adhesive sticker for wall mounting. Equipped with a 433MHz wireless RF chip that allows signal transmission through walls. Note: This model does not support WIFI. Built-in WL117S chip for improved sensitivity and extended remote control range. Package Includes: 1 x One-button Switch Panel + 1 x Controller OR 1 x Two-button Switch Panel + 2 x Controllers OR 1 x Three-button Switch Panel + 3 x Controllers OR 1 x One-button Switch Panel OR 1 x Two-button Switch Panel OR 1 x Three-button Switch Panel Specifications: Material: Plastic Receiver Size: Approx. 42 x 82 x 26mm / 1.64 x 3.19 x 1.01 inches Switch Size: Approx. 86 x 86mm / 3.38 x 3.38 inches Remote Control Distance: 30m Load Power: 800W Input Voltage: AC 85–250V Remote Control Frequency: 433MHz Type Options: One-button Switch Panel + Controller, Two-button Switch Panel + 2 Controllers, Three-button Switch Panel + 3 Controllers, One-button Switch Panel, Two-button Switch Panel, Three-button Switch Panel Note: 1. Please allow 1–2cm measurement deviation due to manual measurement. Ensure you are comfortable with this before ordering. 2. Due to differences in monitor displays, the actual color of the item may vary from the image.