features remote on/off switch by authorized phone free calls, which can be operated from anywhere, no distance limit, very convenient.Features:*850/900/1800/1900MHz quad bands, can work in the worldwide GSM networks.*No call charges. The GSM Relay Switch answers the call from authorized number then carries out the turn ON/OFF action on the first 'ring'.*Secure - Using caller-ID for identification, unknown callers are ignored.*Add or remove users by SMS Text command.*No need to provide a remote control or keys for different users.*Up to 200 authorized phone numbers can be configured at the specified time.*The relay action will return a SMS confirmation to the owner or authorized call in number, this function is editable by user.*The relay close or open time is programmable.*Multiple applications. (Gates, bollards, barriers, garage doors, shutters and access doors or machines).
Cafago
