On-site with cables or wireless with remote access:
The difference between the wireless systems and the BL2 data loggers is the way measurements are transmitted and the saved data can be downloaded and reviewed.
Wireless system with on-site PC: Transmitters measure and wireless transmit the data to a receiver. The receiver is connected to a PC on site, where measurements are saved and reviewed or downloaded for further data processing (e.g. kiln control system). Remote log-in is possible.
Data logger BL2 with or without MC/RH Tracker: The BL2 data logger can save relative humidity and temperature measurements. Adding the MC Tracker allows monitoring relative humidity and moisture in wood and other solid materials simultaneously. To download and review measurements, the BL2 has to be connected to a PC.