The power voltage is permitted in +10%~-10% fluctuating. If it's beyond the said scope, it would influence lifespan, even unlighted or burnt out.
Make sure connecting wire is connected and sealed well to avoid defending Electricity Leakage.
Make sure waterproof protection, and no defending Water leakage before connecting to extra power supply.
Before maintenance, make sure the power cut off. After assembling right, it can be connected power to use.
No breaking to any stipulation of fireproofing. Please ask Professional to install.