ASIAIR PRO is a smart WiFi device that allows you to control Mainstream DSLR cameras.
But some DSLR cameras have a 30-second exposure limit, which requires an external shutter release cable to ASIAIR PRO.
ZWO Shutter Release Cable is of the soft, curled type that can extend the usable length.
N1 (MC-30, 10PIN)
D300/ D300s/ D700 / D3/ D3s /D3x
Length: 1 meter