PowerUnit & SpaceUnitSTART transmitter specially designed for sound start which covers up to 8 lanes. PowerUnit is the start transmitter specially designed for sound start. Thanks to its microphone, it starts the transponder’s timer as soon as it detects a noisy sound nearby (such as a clap or a gunshot). It is associated with an antenna flag, the SpaceUnit, which provides a wider detection zone (6m), and lets trigger the start on up to 8 lanes simultaneously. • Sound StartSimulates a manual gun start of a track meet.• RealisticReaction time is taken into account.• Large detection fieldTriggers the start on up to 8 lanes simultaneously.• VersatileCan be used for block start, 3-point start and standing start.• Convenient and portableThe flag can be easily fold / unfold. The whole transmitter is lightweight and packed into a drawstring bag.• CompatibleWorks with both FxChip and FxChip BLE.• RechargeableTransmitter is charged using a power cable (provided).