This is a PocketWizard Plus II Transceiver This PocketWizard Plus II Transceiver has been tested and is in good working order. The PocketWizard Plus II is a radio triggering system that offers Auto Sensing Transceiver Technology. This technology analyzes the status of the miniphone jacks, camera hot shoe or the TEST button to determine which mode (Transmit or Receive) to set. By default, the Plus II is always in Receiver mode unless it senses a trigger pulse from a camera's hot shoe, then it quickly switches to a Transmitter. For shooting situations that may require the Auto Sensing disabled, simply set the selector switch to "LOCAL" and the Plus II will only receive radio signals. Since the Plus II is a Transceiver, there's no need to worry about how many Transmitters or Receivers to bring with you on the shoot because it's all in one. WE SHIP IN 1 BUSINESS DAY and we package professionally and will combine to save on shipping costs. We are also interested in BUYING your photographic equipment as well. We are Camera Exchange in Waterford Michigan. 6111952
