GOTOTOP GSM Gate Opener, RTU 5024 Access Control, Remote On/Off Switch, Free Call, SMS, SMS Command Support, 850/900/1800/1900MHz

REMOTE CONTROL: This GSM buffer has a remote on/off function. It can be operated from any place with an authorized phone number. There is no distance limit, very convenient. Supports GSM frequencies: supports the four frequency bands 850/900/1800/1900 MHz, which can be used on the worldwide GSM network. No call fees, GSM-Trunk switch can answer incoming calls from authorized numbers and perform on/off operation on the first "ring". SECURE: Use the caller ID to identify and ignore unknown calls. Add or remove users via SMS text commands. You do not need to provide remote controls or buttons for different users. Powerful: Up to 200 authorized phone numbers can be configured at the same time. Trunking confirms feedback to the host or authorized call in the digits. Users can edit this feature. Many applications: the switching time of the relay can be programmed. Supports a wide range of applications to control the opening and closing of gates, posts, fences, garage doors, shutters, gates or machinery.