... modevoltage outputDelay shutdow time15secondsInduction modelow frequency,application- specific card(Temin card--E5557,E5567,EM) for powerLED indicatorscattering beautifull blue ... the door of guestroom, when people come, insert the card for power, it will instantly connect the main power, ... to customer for night operation.3,Delay shutdown when people leave ,taking out the card, the main power will be ...