This product is designed to achieve excellent performance when used with genuine Canon accessories. Canon shall not be liable for any damage to this product and/or accidents such as fire, etc., caused by the malfunction of non-genuine Canon accessories ( e .g., a leakage and/or explosion of a battery pack). Please note that any repairs your Canon product may require as a result of such malfunction are not covered under warranty and will incur a fee.
The TC-80N3 also includes a remote switch that provides the same functions as your camera’s shutter button (auto-focus, autoexposure, and shutter release). When used simply as a remote release (no timer functions), the TC-80N3 does not require battery