The RTR500B series allows you to mix and match an array of wireless radio communication loggers with various Base Units or Data Collectors to meet your needs. Logged data can be automatically sent via network or mobile communication to be saved in cloud storage or to a specified location. By combining RTR505BL with various optional modules, it is possible to measure temperature (Pt100/Pt1000, thermocouple sensor), voltage, current (4-20mA), and pulse. Plus this type features a long battery life of up to 4 years. (Battery Not Included)