This is a PATLITE interface converter (Ethernet/relay output device). My family member used this for work. Only the main unit and adapter are included. It was used quite a while ago, and the operation has not been confirmed. PATLITE PHN-R interface converter, 5V input, 3A output compatible. - Model: PHN-R - Input Voltage: 5V - Current: 1A - Rated Output: 3A 125VAC / 3A 30VDC - Country of Manufacture: Japan - Brand: PATLITE