Using these LED candle globes is easy. Just make sure to connect them to a power source within the 220 - 264V AC 50/60Hz range. You can choose the clear or frosted diffuser according to your lighting needs. Remember, these globes are not suitable for dimming, so don't try to use them with a dimmer switch. They work well with sensors, so you can install them in areas where motion detection is needed. As for maintenance, since the housing is made of aluminium, it's quite durable. But try to keep them in an environment with a temperature between -20 and 50 °C. If you have any problems within 3 years, you can get a replacement.