RTU5034 GSM Gate Opener Relay Switch — Free-Call Remote Access, Quad-Band 850/900/1800/1900MHz, Smart WiFi Control

The RTU5034 GSM gate opener relay enables wireless ON/OFF control of automatic doors and home alarm systems using free incoming calls from authorized phone numbers. You can operate the switch from any location with no distance limit. Built for global compatibility, the unit supports 850/900/1800/1900MHz quad bands and works across worldwide GSM networks. There are no call charges: when an authorized number calls, the GSM relay answers and performs the turn ON/OFF action on the first 'ring'.