GSM Gate Opener WiFi Remote Controller, RTU5024 4G SMS Smart Alarm Garage Door Controller, GSM Remote Control Relay Switch Automatic Door Access Control for Elevators, Garages - Tangxi, Tangxiq92e0gdu8w

• SIM CARD SUPPORT: No call charges, relay switch receives calls from authorized numbers and then performs the switch operation on the first ring. Supports standard SIM cards only. REMOTE CONTROL: Smart garage door controller with remote switch, easy APP control operation, for making free authorized calls, can be operated from anywhere, no distance limitation, can be used for global network. PROGRAMMABLE: Add or remove users with SMS text commands. Relay or open time is programmable. Relay operation returns SMS confirmation to or authorized phone, this feature can be passed with no call charges. AUTOMATIC IDENTIFICATION: Use caller ID to identify and ignore unknown callers. Add or remove users using SMS text commands. No need to provide remote controls or buttons for different users. APPLICABLE: For group type doors, elevators, garages, parking lots, resorts, control rooms, warehouses, unsupervised machine rooms and other telecom operators, on site lighting subframes, on site base stations, traffic controllers and distribution electrical systems and on site cabinets.