![]() Avoid contact with garbage, dirt, sand, dust, water, toxic gases, salt, etc.Test flash is also important to maintain optimum performance. If the unit has not been used for an extended period of time, or is being readied for an important shoot, it is recommended that you take a test flash with the test button and test shoot with it. Periodic checks are recommended every 1 to 2 years in order to maintain high performance.Otherwise, the TTL auto mechanism may be damaged or rendered inoperable. When using the flash unit off the camera, do not try to attach any metallic object to the electric contacts or to mount incompatible accessories.Do not mix battery brands, type or an old battery with a new one. Replace all the batteries at the same time.Do not use the flash unit where it may be directly exposed to rain, water, etc.Use a cushion to protect the flash unit when carrying it in a motorcycle, car, boat, etc. Be careful not to subject the flash unit to strong vibrations, shock or pressure.Avoid leaving the flash unit for extended period in places where the humidity and temperature are very high such as in a car.Never use organic solvents such as paint thinner, alcohol or benzene to clean the flash unit. ![]()
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