1. Press and hold the Power button on the back of the WHP Base Unit until the back-up battery and signal lights turn on.

    Note: The Power LED only indicates that the device is being supplied with power from an AC outlet, not that the device is on.
    device 612/252969.jpg
  2. Press and hold the Power button on the back of the WHP Base Unit until the back-up battery and signal LEDs turn off.
    device 612/252970.jpg