R40
Advantages
- Quad-band, can work in the worldwide GSM Networks;
- No call charges. the GSM GPRS Relay Switch rejects the call from authorized number then carries out the turn ON/OFF action on the first ‘ring’;
- Multiple applications. (gates, bollards, barriers, garage doors, shutters and access doors or machines);
- Secure – Using caller-ID for identification, unknown callers are ignored;
- Can be operated from anywhere, no distance limit;
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