1Remotely monitoring site temperature, power status through wireless GSM Network. When the temperature, power status exceed high threshold or low threshold value, it will send SMS alert or call to 6 preset mobile phone immediately. 2An automation system. When the temperature and power alarm and normal, it can link to Realy1 output actions, this is very useful when the temperature exceed appointed value, need switch on the airconditioning immediately, or when water overflow and need switch on the dryer. 3A relay0 with dialin or SMS remote control. Up to 200 tel. numbers can be authorized for it. Because calls are not answered dialin control within GSM is free of charge. (it only checks the callers number and if the number is authorized responds with relay activation.) This can be used for parking latch control, GSM gate opener, remote control machine, etc. 4Alarm output, when an alarm occurs, it will output for 30 seconds. It can report the site environment at intervals. 5Can be operated from anywhere, no distance limitation. The internal rechargeable backup battery can be used for 6 hours. 6Up to 200 authorized phone numbers. The 1st 3rd user numbers can receive SMS, and the 4th 6th user numbers can receive call while alarm occurrence. 1200 authorized phone numbers can call T200 to turn on/off the Relay0 free of charge. 71 temperature sensor input, temperature measurement range: 55125C, accuracy: 0.1C. 8External AC/DC power status monitoring, AC/DC power on/off will immediately send SMS and call 6 preset mobile phones. 9Support timer report, it can setup every x hours automatically send its status/value to 6 preset mobile phone immediately. 10Support remote reading of historical data via SMS. It can be programmed via SMS commands with password protection. 11Using caller ID and password for identification, unknown callers are ignored, secure to use. 12Based on the GSM networks, it is suitable for many applications. (Temperature, humidity, power status, solar panels, DC voltage). Condition: 100% Item Type: Temperature Alarm Material: ABSColor: As picture shownRated Voltage: DC 9V-24V / 1AWorking Temperature: -10-+60Storage Temperature: -20-+60Relative Humidity: 10-90%, No CondensationWorking Frequency: GSM: 850/900/1800 / 1900MHzCommunication Protocol: GSM PHASE 2/2 + (Including Data Service)Relative Voltage of Output Relay: 3A / 240V ACSIM Card: Nanometer 3VAntenna: 50SMAWired Switch: SupportTemperature Sensor:Temperature: -55-125C, Accuracy: 0.1CSiren Output: Output voltage = DC input voltage, current: