... when the temperature up to appointed value, need switch on the air-conditioning immediately, or when ... >>UP TO 8 Relay outputs drivable (12V-24V),drive electricity <0.2A >>*4 Analog inputs, 0-53mA, ... interval>>User-defined alarm condition (normally close or open), alarm and recovery SMS message for each alarm ... Controller Telemetry,RTU5010,gsm remote controller switch 12v dc output,RS232 config software