Check the listing for details. Wein Safe Synch. Condition: Used. Listed at 24.99 USD. Wein Safe Synch Regulates flash sync voltage to 6 volts and protects your camera's circuitry! Over time, excessive flash synchronization voltage can lead to damage and costly repair; Safe-Sync offers a simple and effective way to protect your camera. No matter how high the original voltage, Safe-Sync reduces it to a safe 6 volts. Designed to be used in-line, with PC connections. WE SHIP IN 1 BUSINESS DAY and package professionally. We will combine orders to save on shipping costs. We are interested in BUYING your photographic equipment as well. We are Camera Exchange in Waterford Michigan. 9112429 Regulates flash sync voltage to 6 volts and protects your camera's circuitry! Over time, excessive flash synchronization voltage can lead to damage and costly repair; Safe-Sync offers a simple and effective way to protect your camera. No matter how high the original voltage, Safe-Sync reduces it to a safe 6 volts. Designed to be uséd in-line, with PC connections. WE SHIP IN 1 BUSINESS DAY and package professionally. We will combine orders to save on shipping costs. We are interested in BUYING your photographic equipment as well. We are Camera Exchange in Waterford Michigan. 9112429eBay integration by