Simple and cheap design for low price market 1. USB or AC adapter(optional) power supply2. One emitter with two outputs/connectors or ir emiter3. IR carrier frequency(38KHZ,56KHZ) or Broad carrier frequency(25-60KHz)4. Standard wire length for emitter is 2M.5. Also can be customized upon request.6. receiver wire length for 1m7. IR receiver distance 15m IR repeater with USB port, Compact IR repeat ...