DEWIN GSM Door Opener, GSM Remote Switch On/Off Remote Switch Call SMS,GSM Relay Module Gate Opener with Remote Control Supports with Free SMS Phone Call

• 【Professional Design】: GSM Opener RTU5035 is a very simple device that can be used to authorize access doors, target control, remote devices and switching of parking systems.
• 【Safe Use】: You don't have to worry that strangers can control your GSM device to open the door. You can authorize door access, control targets, and protect your assets cost-effectively.
• 【Free Call】: There is no calling fee. GSM Gate Opener rejects calls from authorized numbers and then performs ON/OFF operation at the first time. So you can open your garage door with free calls from your cell phone.
• 【Smart Control】: You can open the door with your mobile phone toll-free number, or you can set the device to open the door quickly through the app. The closing relay or opening time is programmable.
• 【Widely used】: Based on GSM network, it can usually be used for doors, guardrails, shutters, parking systems, household appliances, computer rooms, greenhouses, remote equipment, industrial remote control, etc.

Features: 1. The closing or opening time of the relay is programmable. 2. Can be used from anywhere, no distance limit. 3. Can also be used in places where you need to turn on/off your system, machines or equipment remotely with a free call from your mobile phone. 4. No call fees. The GSM GPRS relay switch rejects the call of the authorized number and then executes the on/off action at the first "ringing". 5. Multiple applications, can be used for authorized access to doors, door control, remote equipment switching and parking systems. Specification: Condition: 100% Brand New Material: Plastic and electronic components Colour: as shown in the picture. Voltage: DC 12V / 1.5A, Range: 9-24DC Power Consumption: 12V/16mA; Maximum: 12V/150mA GSM/3G: China Mobile, China Unicom, China Unicom 3G SIM card: support 3V SIM card Antenna: 50Ω SMA Antenna Interface Temperature range: -10~+60°C Humidity Range: 95% RH Size: approx. 82 x 76 x 27 mm/3.2 x 3 x 1.1 inches. Weight: about 231g/8.1oz Package List: 1 x GSM door opener. 1 x good gain antenna. Note: 1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated the same, the colour of the item shown in the photos may be slightly different from the actual item. Please take the real one as standard.