The RS-525SE data logger is a compact, rugged and ultra-low-power device designed for remote monitoring applications, including locations without mains power. The data logger features a built-in LTE-M/NB-IoT modem and internal antenna. It monitors battery status, internal temperature and relative humidity. The RS-525SE provides flexible interfacing for a wide range of meteorological and hydrological sensors. It supports RS-232, RS-485, SDI-12, NMEA, MODBUS and various analogue interfaces.

Data is stored in the on-board memory and can be expanded using a microSD card of up to 64 GB. Data can be transmitted over the cellular network using various secure protocols, including MQTT, HTTP, FTP, e-mail and proprietary TCP. The logger can be configured locally via USB or remotely using a secure TCP connection.

The RS-525SE is available with several power options, including battery, solar and DC-powered editions. This makes the data logger suitable for a wide range of autonomous and remote monitoring applications.