GSM Wireless Door Access Free Call Phone Remote Control Gate Opener Relay Switch

Specifications:Authorized 200 users open gate at the specified time!GSM gate, barrier, shutter, garage door and door opener.Open gate or garage door with a free call from your mobile phone!Remote switching machines ON/OFF with a free call from your mobile phone!Remote monitoring the gate, barrier, shutter, garage door open/close status!The GSM gate opener/relay switch is a very simple device which can be used for authorized door access, controlling gates, switching of remote equipment, car parking systems.Actually the GSM gate opener/relay switch can be used in places which require to turn ON/OFF your system, machines, equipment remotely with a free call from your mobile phone.Just dial from authorized user number at the specified time then the barrier and doors are opened, or the machine are turn on or off by the GSM gate opener/relay switch.There are no call costs, the GSM gate opener/relay switch rejects the call from authorized number then carries out the turn ON/OFF action.Moreove