Godox AT-04 Trigger Universal

Key Features.
Model:  At-04
Transmission system:  433 mhz
Channel:  4
Transmitter power:  23a 12 v battery
Receiver power:  Ac100-240v 50/60hz
Synchronization cable:  Ø6. 35/ø3. 5
Sync speed:  1/200 s
Applicable distance:  Up to 50 m in open air; up to 20 m indoors