GSM Temperature Alarm

We are offering gsm temperature alarm ,
mainly features of the gsm sms controller:
1. can be operated from anywhere, no distance limitation, android app and ios app ikeypad for quickly operation;
2. din rail 35mm installation;
3. no call charges. The gsm sms controller rejects the call from authorized number then carry out the programmable actions on the first 'ring';
4. multiple applications. (gates, barriers, temperature, machines, automation systems);
5. secure - using caller id and password for identification, unknown callers are ignored;
6. programmable by sms commands with password protection;
7. external ac power monitoring, ac on/off will send sms to authorized phone numbers;
8. timer report—can setup every x hours automatically send its status/value to the authorized numbers;
9. rechargeable backup battery inside can last 18hours;
10. Upto 6 authorized phone numbers,
11. Authorized phone numbers can be used for dial to switch on/off one or both of the relay outputs, inquiry status, armed or disarmed;
12. Two digital inputs (dry contact, nc/no)
13. Two digital outputs (dry contact, no) with relay rating 10a/240vac for connecting the switch of the air conditioner or machines,
14. One temperature sensor input,
15. Based on gsm network, applied to many applications.