This is generic shutter, works same as the original timer remote shutter. The timer can be set anywhere from 1 second to 99 hours, 59 minutes, 59 seconds. The buttons can be operated with a single thumb. The LCD panel can also be illuminated. The remote has a stylish and ergonomic design, making it a pleasure to use. It has a super large LCD screen. The shutter release button on the remote is a two-stage button: half-pressing the button will cause the camera to focus, and full-pressing will trigger the cameras shutter. Features: Full functions supported as the camera shutter switch (with halfway or complete pressing) Functions as a timer remote and can be programmed to function as an interval met Design for group, macro, long exposures, continuous, motion shooting, etc. Energy saving design, can be use for long time Timer delay: 0s to 99hrs 59min 59s in 1s increments Exposure time: 0s to 99hrs 59min 59s in 1s increments Interval: 0s to 99hrs 59min 59s in 1s increments Specifications: Approx Size: 150 X 38 X 15 mm Power source: Two AAA-type batteries Battery life: Approximately two months of continuous shooting with a delay of 5 min, an exposure time of 4 min 56 s, and an interval of 5 min. Function: Delay/ Self Timer (DELAY) Just like the self timer on your camera. The TM timer remote switch allows you to set any delay (in 1 second increments) up to 99 hours, 59 minutes and 59 seconds. BULB/Long Exposure (LONG) It allows you to take time exposures up to 100 hours in length. Interval Timer (INTVL) The Interval Timer can be set to any time period up to 100 hours as well. If you set it to 10 minutes, for example, one exposure will be taken every 10 minutes until either the film runs out or the Exposure Count limit has been reached. Exposure Count (N) This setting permits you to set the number of exposures that will be taken, up to a total 399. Compatible With : Canon EOS Digital SLR EOS 450D 500D 550D 600D 650D 60D 1100D 1000D EOS Rebel XSi XTi XT T1i T2i T3i