The #1 does not come with any internal probes. You will need to run your probe wires through the hole on the top. If I didn't already have a Maverick which works fine, I would get a Fireboard, because of the multiple probes. If you don't need four or more probes, I would check out ThermoPro. You should get one with both an ambient probe, and a meat probe. I don't use the ambient probe very often, but it's good to have in case I ever need to check the box temp, or for cold smoking. I also have a couple of the el-cheapo digital thermometers that you can buy at big box stores, for when I need additional probes, or for backups. The #1 comes with the analog controller, so it will be a change from your D model. But it's simple and works great.