Features: 1.Working Principle: Suitable for controlling 1 lamp from multiple places.Suitable for stairs, corridors, villas, etc. 2.Avoid Darkness and Energy-saving: Can control the light switch from multiple places 3.Luminous fluorescent strip: Don39;t worry about not finding the switch 4.With self-adhesive design, easy to install anywhere you like. 5.100 Satisfaction: If you have any question, please feel free to contact us. We will try our best to help you. Notice: Please allow 1-3cm deviation due to manual measurement Actual color may be slightly different from the image due to different monitor and light effect Description: Working frequency: 433.92MHZ Distance: 100 meters open distance Maximum power: 1000W Switch Battery: CR2032 Batterynot include Size:as shown Package List: Choice 1: 1x Controller Choice 2: 1x Switchwith accessory