This is the ZOLL AED 3. Now, this particular one here is a training unit. But the training unit is designed exactly the same way as the real unit. So we are going to show, have a look at some of the features on it. On the front you got the on-off button, so as soon you get to the emergency, you just turn the button on. Down here is the child setting so it's automatic changes internally between child and adults and this button here is the shock. On the front here's the speaker because it's giving audio commands and this here is the main display, it tells you what's going on. Across the top here, this is because it's a trainer, you have got a pause button and you can change features on it up here as well. Handles at the top, on the back, you got the pads, now this is a training unit, so the pads are in this plastic bag. On here also, you have got a USB port, so you can take data off, it's a nice easy way that once you have used a real unit, you can take the data straight off the unit. As a training unit, this is how you would then program the unit if there are any guideline changes going down, if they change the way the AED is supposed to work, you can change it there.

On panel here is the battery pack and this is a training unit, so this is taking standard D cell batteries, but live units, we would have a proper battery pack in there. The real-life unit would have pads in here, then they had the pads with the expiry date printed on them, which you need to monitor and keep a check of. So you just take these out and then put the pads to start with. Now, the pads on these are quite different from a lot of other units because they have this sensor on them, so this is a bit that goes on the chest and this is the sensor that goes on the main chest. So what you can do with them is you can, depending on the size of the patient, you can leave it on it or just rip that off. Now, that sensor is how the unit is going to detect how you are doing CPR. So as you are pushing down on the chest, it can detect the speed, so it can tell you if you are going too fast or too slow, or too deep or too shallow.

So it's quite a clever idea there. The other pad is just the pad that goes underneath the arm and these work with other pads on the market, where you can literally just take the pad and peel it off and apply it straight onto the skin. So this one is, remember, a training unit, so it looks slightly different than the normal pads would look basically the same, it's a very similar type of set-up for the pads. With this unit here, we can turn it on, so we push the button, turning it on comes up in the display.