Feature:1. *850/900/1800/1900MHz quad bands, can work in the worldwide GSM networks.2. *No call charges. The GSM Relay Switch answers the call from authorized number then carries out the turn ON/OFF action on the first \u0027ring\u0027.3. *Secure - Using caller-ID for identification, unknown callers are ignored.Specification: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.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: 5034GSM Frequency: 850/900/1800/1900MHzSupports: 2G/3G/4G GSM CardDigital Output: NC/NO dry contact, 3A/240VACDC Power Supply: 9-24V DC/2APower Consumption: 12V input Max. 50mA/Average 25mASIM Card: Standard SIM CardAntenna: 50 SMA Antenna interfaceTemperature Range: -20~+60°CHumidity Range: Relative humidity 90%Dimensions: Approx. 3.86 * 3.54 * 1.02in / 98 * 90 * 26mmPackage Information:Package Size: Approx. 5.12 * 3.74 * 1.18in / 130 * 95 * 30mmPackage Weight: Approx. 4.87oz / 138gPackage List:1 * GSM Door Opener1 * User Manual1 * AutennaPackage List:1 * GSM Door Opener1 * User Manual1 * Autenna