1.Insert a relevant card for power 2.10 to 15 seconds power cut delay after withdraw the card 3.Led indication and pc isolation material 4.Eu and uk standard in stallation 5.Suitable for working with construction automation systerm, energy management 6.Up to 20-30% energy saving, the same card for opening the door and gain power Color for reference:ivory(the default color)grey, siler, and black Voltage:90-120v/190-240v ac 50hz Maximum load:16a(30a relay) Dimension:86*86*46mm