Model: RTU5024 (3G Version Optional) Name: GSM 3G Relay GSM Switch GSM Gate Opener The GSM 3G Relay GSM Switch GSM Gate Opener RTU5024 is a upgrade version of gsm gate opener, it supports 200 authorized users, the authorized users can call in to open the gate or switch ON OFF the equipments with a free charge call at the specified time. 1. GSM Frequency: 850/900/1800/1900Mhz ,3G Frequency:850/1900Mhz,900/2100Mhz,850/2100Mhz(Optional),can work in the worldwide GSM/3G Networks; 2. No call charges. the GSM Relay rejects the call from authorized number then carries out the turn ON/OFF action on the first 'ring'; 3. Multiple applications. (gates, bollards, barriers, garage doors, shutters and access doors or machines); 4. Add or remove users by SMS Text commands; 5. No need to provide a remote control or keys for different users; 6. Up to 200 authorized phone numbers can be configured at the specified time; 7. 1 output with relay rating 3A/240VAC for connecting the switch of the door or machines. Applications: 1. Remote open/close swing/sliding gates, doors, shutters, garage doors,locks with a free call! 2. Residential: Door,gate,garage access control, electronic fan,microwave,air-conditioner control. 3. Industry: Remote switch equipment, for example: street lights, solar power, motor, inverter, PLC, pumps, fans, etc. 4. Agriculture: Remote control pumps, etc. 5. Business: Remote control electronic boxes,bright billboards,LED signs,etc.