ProMaster Flash Trigger System 2.4GHz ProMaster SKU: 5734 | Helix SKU: PR5734 Overview The ultimate remote tool, the ProMaster Remote Camera and Flash Trigger System works as a wireless remote trigger for your on camera or studio flash or it can be used as a wireless remote shutter release for your camera (optional modular cord required). These units operate on the 2.4GHz frequency, providing for extended distance and much higher reliability than older systems. With the dual functionality, the ProMaster Remote Camera and Flash Trigger System is a must have accessory for both the avid photographer or the casual shooter. Available in either single flash or 2 flash configurations. Functions: Wired Remote Control(for DSLR camera with remote socket) Wireless Remote Control(for DSLR camera with remote socket) BULB/Continuous Shooting Delayed Shutter Release Wireless Flash Trigger (for camera speed light or studio light) Receiver includes 1/4"-20 tripod mount Specifications Wireless Frequency: 2.4GHz Channels 16 Operating Distance: 300’ / 100 meters (Max) Flash Sync Speed: 1/250th (Max) Transmitter Power: CR2032 (1qty) Receiver Power: AAA Battery (2qty) Transmitter Weight: 1.1 oz / 32g (w/o Battery) Transmitter Dimensions: 2 7/16 x 1 9/16 x 1 1/16'' / 62.6x39.2x27.1mm Receiver Weight: 1.4 oz. / 40g (w/o Battery) Receiver Dimensions: 3 1/8 x 1 1/2 x 1 5/16" / 79.9x37.8x33.2mm