Features: brand new and high quality FEATURES. Support: 2G; 3G; 4G; support to add 1001 authorize users; Support: Free calling to remote control, app control; Relay Close for Time G202 PLUS: 0-999s, G203: 0-9999s; Support relay keep-on, no for time limited; Support to inquiry all users by one command. HIGH PERFORMANCE. Input voltage: DC9V-36V; One output with relay (3A/240VAC) for connecting the switch of the door or machines. RELIABNLE QUALITY. This gate opener with ABS casing, good insulation, especially suitable for industrial control applications. Small size and support for wall mounting. REMOTE CONTROL. Support remote restarting, remote reset, no-distance limitation, can be operated from anywhere. Based on GSM/3G/4G communication frequency, can be used in the global-network. WIDE APPLICABE. Suitable for doors, elevators, garages, car park, resorts, control rooms, warehouses, unsupervised machine rooms of the group type, such as telecom-operator, on-site lighting subframes, base stations on site, traffic controllers and distribution of electrical system, etc. Specifications: Network-Mode: 2G; 3G; 4G Size: Approx. 96.5x50x31.5mm/3.79x1.96x1.24in Color: As Picture Shown Weight: Approx. 120g Material: ABS Package Includes: 1 X G202 Access Controller note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!