Google them. Lots available on-line, from 6" or so on up.
Never checked the temperature. That system is long gone. However, there is a story to go with it...
I built that in 2002. That year, we had finally paved the driveway and Dad, at 78, was cutting and laying stone for 2- 3 x 3 x 7 gate posts. Mom would come over and watch him and knit.
When she saw the camera, she asked me to move it to the gate so she could keep an eye on him from home. (They were on my home network and Internet via a 4.5 mile wireless link.)
Later, when we started building the cabin down in our woods, (my avatar pic) I moved the camera down there. By then I had figured out port forwarding. Mom would keep an eye on Dad, at 80+, working alone cutting and laying up the fireplace and chimney. He made the scaffold and everything.
When it was time for her to go play bridge, she would call me at work and tell me that it was time for me to babysit my father. I'd call up the camera on my computer there and watch him work while I worked.