Features 1、【Easy Remote Access】: This mini access controller GSM 4G allows you to remotely switch gates, shutters, garage doors, and openers simply by making a free call from your mobile phone! Open your gate or garage door with a free call from your phone, no matter where you are. 2、【User-Friendly App】: Our device supports the Callny Control APP, which allows you to add up to 1001 authorized users. It also supports one-click querying of all users, making user management a breeze. 3、【Versatile Applications】: This device is perfect for a variety of applications, including gates, bollards, barriers, garage doors, shutters, parking systems, and maintenance doors or machines. It/u0027s not limited by distance and can be operated remotely from anywhere. 4、【Reliable Quality】: Our opener is housed in an ABS shell with excellent insulation, making it especially suitable for industrial control applications. It/u0027s compact in size and supports wall-mounted installation. 5、【Global GSM Compatibility】: Based on GSM2G/3G/4G communication frequency, this device can be used in GSM networks worldwide. It supports remote reboot and reset, with no distance limitations. It/u0027s perfect for doors, elevators, garages, parking lots, resorts, control rooms, warehouses, unmanned group machine rooms, and more. Features: 【Easy Remote Access】: This mini access controller GSM 4G allows you to remotely switch gates, shutters, garage doors, and openers simply by making a free call from your mobile phone! Open your gate or garage door with a free call from your phone, no matter where you are. 【User-Friendly App】: Our device supports the Callny Control APP, which allows you to add up to 1001 authorized users. It also supports one-click querying of all users, making user management a breeze. 【Versatile Applications】: This device is perfect for a variety of applications, including gates, bollards, barriers, garage doors, shutters, parking systems, and maintenance doors or machines. It's not limited by distance and can be operated remotely from anywhere. 【Reliable Quality】: Our opener is housed in an ABS shell with excellent insulation, making it especially suitable for industrial control applications. It's compact in size and supports wall-mounted installation. 【Global GSM Compatibility】: Based on GSM2G/3G/4G communication frequency, this device can be used in GSM networks worldwide. It supports remote reboot and reset, with no distance limitations. It's perfect for doors, elevators, garages, parking lots, resorts, control rooms, warehouses, unmanned group machine rooms, and more. Specifications: Material: ABS Usage: Access control, garage Rated Voltage: AC DC 9V~36V/1A Working Temperature: -10 ℃~+60 ℃ Storage Temperature: -20 ℃~+60 ℃ Relative Humidity: 10-90%, no condensation Working Frequency: Global GSM 2/3/4G frequency Output Relay Related Voltage: 5A/250VAC, 7A/125VAC, 20A/14V SIM Card: Nano type Switch: Supported Relay Ports: 5A/250VAC, 7A/125VAC, 20A/14V, 20A/5V Product Size: 5 * 4.5 * 1.5cm/2 * 1.8 * 0.6inch Product Weight: 17g/0.6oz Note: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Packing List: 1 x Access Control Controller 3 x Installation Buckle 1 x External Antenna 1 x Instructions Package List Packing List: 1 x Access Control Controller 3 x Installation Buckle 1 x External Antenna 1 x Instructions