GSM Temperature Alarm

We are offering gsm temperature alarm,
mainly features of the gsm sms temperature monitoring alarm:
1. can be operated from anywhere, no distance limitation;
2. no call charges for inquiry. The gsm sms temperature monitoring alarm rejects the call from authorized number then return onsite temperature and ac power status on the first 'ring';
3. multiple applications. (temperature monitoring);
4. upto 6 authorized phone numbers, each number can be used to receive call or sms or both of call and sms while alarm occurrence;
5. one temperature sensor inbuilt, external connection is available, measures temperatures from –55°c to +125°c (–67°f to +257°f), 0.5°c accuracy from –10°c to +85°c, can setup high and low temperature alarm threshold value to alert the authorized users;
6. external ac power monitoring, ac on/off will send sms to authorized phone numbers;
7. timer report—can setup every x hours automatically send its status/value to the authorized numbers;
8. rechargeable backup battery inside can last 8hours;
9. secure - using caller id and password for identification, unknown callers are ignored;
10. Programmable by sms commands with password protection;
11. Based on gsm network, applied to many applications.
standard package list of the gsm sms temperature monitoring alarm:
gsm sms temperature monitoring alarm x 1
gsm antenna x 1(inbuilt)
ds18b20 temperature sensor x1(inbuilt)
backup battery x 1 (inbuilt)
user manual x 1
note: the package does not include any sim card.