Pizza oven door thermometers are great… if you want to know the temp of area around the thermometer stem. That only tells you one temp - Big Whew…
And skip installing temperature probes into the wood-fired oven. That’s more work / trouble than it’s worth.
All you need is an inexpensive laser thermometer that will tell you the surface temp of any area of the oven you point the laser at. Just make sure the thermometer you select goes to 1000°F or a bit higher.
When you want to bake, I use this simple stand thermomether on a cold firebrick that is cut in half. This way, the thermometer reading is not off-set by the blazing temperatures of the firebrick hearth / cooking surface.