Features: Easily control many electrical appliances through only a text or a phone call. Up to 5 different mobile phone numbers can be pre-set in the system. Using caller ID for identification, unknown callers are ignored, so it is of security assurance. According to the corresponding frequency, it can be operated from anywhere, no distance limit. Made from aluminium alloy shell, it is easy to dissipate heat and can effectively prevent fire hazards as well. Comes with the controller and antenna, and it is easy to install and operate. Can be used for authorized door access, controlling gates, switching of remote equipment, car parking systems, etc. Great for control of home electrical devices such as server, lamp, computer, refrigerator, TV, wireless router and so on. Specifications: Work frequency: 850 / 900 / 1800 / 1900MHz Input voltage: DC 9-12V Input power: 0.9W Output current: 10A Output voltage: 220V/10A, 125V/30V/15A Max. output power: 2200W Material: Aluminum Alloy Shell Size: 155 * 65 * 32mm / 6.1'' x 2.56'' x 1.26'' Package Weight: Approx. 350g Package Included: 1 x GSM Controller 1 x GSM Antenna 1 x Adapter Note: 1. It is easy to install but professional installation is highly recommended. 2. Dear customers, if you need other plug adapter, please contact us. .3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.