1. No call charges. the GSM Gate Opener rejects the call from authorized number then carrys out the turn ON/OFF action on the first 'ring';
2. Multiple applications. (gates, bollards, barriers, garage doors, shutters and access doors or machines);
3. Secure - Using caller ID for identification,unknown callers are ignored;
4. Can be operated from anywhere, no distance limit;
5. Add or remove users by Simple SMS Text command;
6. Up to 99 authorized phone numbers can be configured;
7. Two Digital inputs for door sensor, motion sensors or other sensors to protect your door and windows, when any one of them triggered, will send SMS alert message you immediately;
8. One output with relay rating 3A/240VAC for connecting the switch of the door or machines;
9. The relay action will return a SMS confirmation to the owner, this function is editable by user.