Overall, this is a good item. The remote probe has a 40 inch cable on it. Good for continuous monitoring of your chicken or pork or roast beef. It plugs in on the side above the display, there's a little rubber plug in it. Pull that open (the plug is attached on the other end) and plug in your remote probe. The unit powers on when the remote probe is plugged in, or when the built in instant read probe is swung open. The top button will turn the light on, on the display screen. If you hold it for a bit, it will switch between Fahrenheit and Celsius. It's about as fast as is reasonable to expect. The bottle opener is a useful bonus, on the rare occasion I need one. The battery compartment door takes some finagling to close, once the battery is in. Slip the battery into the tiny silver seat along the rim of where the battery goes, or it won't work. That's the only thing I don't care for. The seat is tiny and you may not realize you need to seat the battery into it, and it's going to take patience to get the battery cover back on. After that, it's awesome.