The Wein Monoplug Safe-Sync regulates flash sync voltage to a safe 6 volts and protects the camera's circuitry.
Over time, excessive flash synchronization voltage can lead to damage and costly repairs, the 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.
With Monoplug male and female connection.
Monoplug Safe-Sync High Sync Voltage Regulator