... drivable outputs(12V-24V); 4 Alarm logic inputs New Program Software Released!More Easier,More Professional,More Reliable!The GSM Controller ... inputs,8 relay drivable Outputs, 4 Analog inputs, Microphone and Speaker . The GSM Controller RTU5010 with 4 I/O ports, ... without AD inputs, Microphone and Speaker. The other functions are the same.) ModelDigital InputRelay outAnalog ...