Description

GRD3305-XF GSM/GPRS data logger and SMS alarm unit with 4 analogue inputs (0-1v, 0-10v, 4-20mA), 4 digital state/counter inputs (2 configurable as NPN Outputs). RS232/485 serial port MODBUS master (reads up to 100 registers). Power supply 9-30vDC. USB port for local programming and configuration. The GRD will connect to a remote server to generate a MySQL database for data logging. Our M2M web interface can also be used for monitoring and to provide SMS or e-mail alarming. GRD unit has an internal back-up memory for up to 100,000 readings in the event of connection issues with mobile network or remote server. Units can also be configured to send direct SMS messages on alarm conditions on any analogue or digital state input and accept SMS instructions to activate a digital output.