Function&Features RTU APP IOS&Android Based on GSM network, widely used] GSM access control controller RTU5024 can be used to authorize access control, parking systems, household appliances, production automation, remote equipment switching, industrial remote control, etc. Can be operated anywhere without any distance limitation. Easy APP remote wireless control] The whole process of mobile APP control, the interface is intuitive and easy to operate, and the functions are richer. The door only needs to be shaken without any cost. Intelligent ID identification, hang up strange calls] Just dial the authorized user number, and you can open or close the fence, door or machine. There is no call cost, the GSM access controller refuses to call the authorized number and then performs the on / off operation. You can configure up to 999 authorized phone numbers. SMS Smart Alarm] Built-in 2 digital inputs. When any one triggers, it will send a reminder text message to the specified number, the family will take care of it, and the alarm will be activated immediately; protect your assets through the GSM network.