Note: 1. Follow material manufacturer's directions for curing times on various materials. It is better to over cure rather than insufficient cure. Over curing cannot harm the restoration. 2. If the LED remains activated for an extended period, a safety thermostat will cut off the LED to protect curing gun from overheating. Normal usage may then be resumed if the handpiece is idled for an extended period for cooling. 3. Battery has very sensitive protective IC inside to prevent battery from over current and over heat, But outside electric noise may have a chance to trigger this IC to work and shut down the system, under this case please recharge the battery. Then shut down protection will be turned down and Curing Light will be ready for use again. Product Description& Fields of Application The Ultra-lite 1800E DUAL is a high-performance LED Curing Light intended for polymerization of light cured dental materials by dental professionals. The U…