STUDIO & LIGHTING Studio Triggers Helios receiver Studio type 4 Helios receiver Studio type 4 3 points to the loyalty system Availability Product is no longer available Manufacturer Helios Product code 793245 Radio receiver 2,4GHz. ... Read More Description Specification: hot shoe cable with both 3,5 mm and 6,3 mm jack (included) power supply: 2x AAA (not included)