2G 4G Door Gate Opener Relay Switch Remote Control Door Access Wireless Door Opener By Call SMS Command ,Long Lasting

This GSM door opener has the function of remote switch by authorized phone call, which can be operated anywhere without distance limitation, very convenient. Support 2G 3G 4G communication frequencies, support authorized user numbers, and support querying your own authorized numbers Support wide voltage input, support relay shutdown time 0-9999 seconds, support relay permanent shutdown, until the next command interrupt shutdown, support remote restart, remote reset, support one-key query all numbers Support querying device status Support querying signal value, support authorized number call in and SMS control device Supports authorized common users, supports adding additional users to receive notification pushes, and does not occupy the authorized