Hopcd GSM Door Opener, Remote Automatic Relay Switch, Free Call Access Controller RTU5034 Support 850/900/1800/1900MHz

• Adopt GSM / 2G network communication, without any distance limitation, it can be used anywhere. The quad-band GSM frequency 850/900/1800/1900 MHz, can work in the global GSM network.
• Without calling charges, the GSM GPRS relay switch rejects calls from authorized numbers and then performs an open/close operation on the first "ringtone". Wide operating voltage, support DC 9-24V power supply and anti-reverse protection design.
• Supports 200 groups of numbers, each number group can be configured to control the relay within a specified period of time. A relay output, the authorized number will be closed after the incoming call and it will be automatically opened after the set time.
• Add or delete users with SMS text commands, simple operation, convenient to use. Once the authorized phone controls the relay, it can send action text messages to the user.
• Between 0 and 999 seconds, the closing time of the relay can be controlled arbitrarily, where 0 means: the relay will open 0.5 seconds after closing, and 999 means: the relay will remain closed until the authorization number is dialed. You can query the current device state (relay status and GSM signal value) via SMS instructions.

Specifications: Condition: 100% brand new Item Type: GSM Gate Opener Material: metal. Colour: as shown in the picture. Size (L x W x H): approx. 90 x 70 x 27 mm/3.5 x 2.8 x 1.1 inches. Operating voltage: DC 12V/1.5A, range: 9-24VDC Working power consumption: standby: 12V/16mA; Maximum work: 12V/150mA GSM frequency: 850/900/1800/1900 MHz. SIM card interface: support 3V SIM card External antenna: SMA antenna interface: 50 Ohm Relay output: 1 relay output, rated output 3A/220V AC, 7A/125V AC, 20A/14V DC Operating temperature range: -10 to +60 °C Operating Humidity Range: 95% relative humidity (non-condensing) Applications: Remote opening/closing swing/sliding doors, doors, shutters, garage doors, locks with free call! Residential: door, gate, garage access control, electronic fan, microwave, air conditioning. Industry: remote switching equipment, for example: street lights, solar energy, motor, inverter, PLC, pumps, fans, etc. Agriculture: remote controlled pumps, etc. Business: remote control electronic boxes, light billboards, LED panels, etc. Package list: 1 x host controller 1 x GSM Antenna 1 x instruction manual