GSM GPRS Telemetry Data Logger S220
0S220 Serial GSM GPRS Remote Controller is a universal GSM dialer and controller as well as a GSM GPRS Remote Control and Alarm Unit. it provides multi digital relay outputs(120VAC/3A, 24VDC 3A,), upto 6 digital inputs(Opto-isolated,Active Contact, 3~24VDC, Completely