Overview This GSM gate opener features remote on/off switch by authorized phone free calls, which can be operated from anywhere, no distance limit, very convenient. The GSM Gate Opener RTU5024 is a powerful GSM relay that can be used for authorized door access, controlling gates, switching of remote equipment, and car parking systems. Additionally, it can also be used in places which require you to turn on/off your system, machines, or equipment remotely with a free call from your mobile phone. Features *850/900/1800/1900MHz quad bands, can work in the worldwide GSM networks. *No call charges. The GSM Relay Switch answers the call from authorized number then carries out the turn ON/OFF action on the first 'ring'. *Secure - Using caller-ID for identification, unknown callers are ignored. *Add or remove users by SMS Text command. *No need to provide a remote control or keys for different users. *Up to 200 authorized phone numbers can be configured at the specified time. *The relay action will return a SMS confirmation to the owner or authorized call in number, this function is editable by user. *The relay close or open time is programmable. *Multiple applications. (Gates, bollards, barriers, garage doors, shutters and access doors or machines). Specifications Model: RTU5024 Signal2 GSM Frequency: 850/900/1800/1900MHz Digital Output: NC/NO dry contact, 3A/240VAC DC Power Supply: 9-15VDC/2A Power Consumption: 12V input Max. 50mA/Average 25mA SIM Card: Standard SIM Card Antenna: 50 SMA Antenna interface Temperature Range: -20~+60C Humidity Range: Relative humidity 90% Dimensions: Approx. 3.23*2.99*1.06in / 82*76*27mm Package List 1 * GSM Door Opener 1 * User Manual Notes: 1. Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it.