Features: 100% brand new and high quality Receiving Distance: 5-12 meters (Note: straight line distance, remote control is aligned with the receiving head and there is no obstacle in the middle) Module Type: infrared 1-Channel learning type; It can learn all NEC format infrared remote control. The module uses genuine quality relay, normally open interfaces.Maximum voltage: 5V. Fault-tolerant design, even if the control line is broken, the relay will not move. The interface design of human nature, all interfaces are available through a direct connection terminal leads, very convenient. Package Includes: 1x Infrared Remote Control Relay Module Specifications: Item:Bestep Infrared Remote Control Relay Module Module Size:approx 5.3x1.93cm/2.08x0.76in Switch Size:approx 8.63x4.02cm/3.38x1.57in Material:Plastic note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.