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The GSM SMS Controller Alarm GSM SMS RTU is cost-effective remote control and alarm unit. Includes 1 analog, 1 counter, 1 temperature, 2 digital inputs, and 2 relay output inside. When alarm occurrence, will send SMS or dial the preset numbers. Special for small applications to switch on/off equipments with a free charge call or SMS, environment monitoring, safety monitoring and so on.

When alarm occurrence, will send definition SMS text and dial the user mobile phones.

1. Can be operated from anywhere, no distance limitation, Android App for quickly operation;
2. No call charges. the GSM SMS Controller rejects the call from authorized number then carry out the programmable actions on the first 'ring';
3. Multiple applications. (gates, temperature, pulse counter, humidity, machines, automation systems);
4. External AC Power monitoring, AC On/OFF will send SMS to authorized phone numbers;
5. Timer Report—Can setup every x hours automatically send its status/Value to the authorized numbers;
6. Rechargeable Backup Battery inside can last 18hours;
7. 6 authorized phone numbers, each number can be used to receive call or SMS or both;
8. Authorized phone numbers can be used for dial to switch ON/OFF one or both of the relay outputs, inquiry status, armed or disarmed;
9. Two Digital inputs (Dry Contact, NC/NO) for door sensor, motion sensors or other sensors, the input activated can active one or both of the relay outputs and send programmable SMS and dial to authorized phone numbers;
10. Two digital outputs (dry contact, NO) with relay rating 10A/240VAC for connecting the switch of the air conditioner or machines, the outputs can setup as always ON, Pulse output, by SMS, authorized phone number dial in, and alarm events;
11. 1 Pulse Counter input, can setup start value, interval alert value, interval time to alert, total value alarm, when total alarm occurrence can active one or both of the relay outputs and send programmable SMS to authorized phone numbers;
12. One Analog input, 0-5V or 0-20mA or 4~20mA, 10bits Direct Current inputs, can setup interval time to alarm, interval value to alarm, ultra-high, high, low, ultra-low alarm, ensure time, when alarm can active one or both of the relay outputs and send programmable SMS to authorized phone numbers;
13. One Temperature Sensor input, 12bits, 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 interval time, interval value, ultra-high, high, low, ultra-low temperature alarm can active one or both of the relay outputs and send programmable SMS to authorized phone numbers.