Can we connect the AKCP combined temperature/humidity probe directly to the network?

The Temperature/Humidity sensor is only the sensing device, you need to use an AKCP main unit. The simplest is the SensorProbe2 This will take up to 2 sensors and has its own IP address and software, it can be accessed over the Internet and the software enables you to set limits and receive email alerts when these limits are exceeded. A benefit of the AKCP monitors and sensors is that the sensors can be placed anywhere on the same network via your CAT5 cabling infrastructure.