Very simple device that can be used to authorize access control, control , remote device switching, parking systems. GSM door opener can be used where you need to remotely open/close systems, machines, equipment with free calls on your mobile phone and protect your assets. Barriers and doors can be opened by simply dialing an authorized user number, or the machine can be opened or closed via a GSM door opener. No call charges, reject calls from authorized numbers, and turn on/off. With 2 digital inputs, for digital input, when any one input is triggered, the siren will be activated or the light will be turned on, and at the same time, an SMS alarm will be sent to the owner immediately. Opening the door is no longer the traditional way, it is more fun to open the door by shaking it. Multiple applications, bollards, barriers, garage doors, shutters and access doors or machines., Manufacturer: ZXZZAS