Built-in wireless commander and slave flash
The Cactus RF60X is a 2.4GHz radio-based wireless portable flash with a built-in transceiver that runs on 16 channels. It operates in three modes, Local for on-camera operation, Master and Slave modes for off-camera. To act as a commander, set an RF60X to Master and it can trigger an unlimited number of RF60X set in Slave mode. The effective distance between the RF60X Master and RF60X Slave is up to 100m (328 feet).