Product Description:Remotely open doors with zero call charge by calling in with your cell phone!You can call in with your cell phone to remotely switch on and off the device at zero cost!200 users can be set to call in and open the door within a limited period of time!GSM 3G Remote Switch Controller RTU5024 is the most easy-to-use, stable and reliable cost-effective remote controller, which has been widely favored by overseas users since it was introduced to the market in 2014, and so far, it is the remote controller with the highest market share and the best customer acceptance in the global market among similar products. Users only need to call into the cell phone card in the device with their cell phones to remotely open and close doors and devices without incurring any communication costs. Adopting industrial-grade GSM/3G communication module, integrating stable and reliable high-performance microprocessor MCU, it provides 1 relay output, which can support normally open and normally closed as well as pulse output in various ways. Through the wireless GSM, 3G wireless network, the user does not need to be physically present, just call into the device, the device monitors whether the call-in number is authorized or not, and then automatically performs the action of shutting down or turning on certain devices.GSM 3G Remote Switch Controller RTU5024 is suitable for China Mobile, China Unicom's GSM network, China Unicom's WCDMA 3G network. It is widely used for remote control of industrial sites, home appliances, access control, drips, valves, gates and other remote control places.In addition, the user sends SMS commands to the device through the authorized number cell phone for remote query, control equipment and other functions. The device can also be daily as well as fixed-point periodic reporting site data, power status situation SMS to the user.Adopting standard industrial terminal interface, users can use it without specialized knowledge. *Typical application placesRemote control of garage doors, automatic doors, gates, electric doors and so on;Remote control of equipment, pumps, gates, water valves, etc;Remote control of other equipment. Functional characteristics: Adopting GSM/3G network communication, not limited by distance, can be used anywhere; Wide working voltage design, support 9~24VDC power supply, and with anti-reverse connection protection design; Adopt SMS to set parameters remotely, which is convenient to operate and easy to use;Support 200 groups of numbers, each group of numbers can be set to control the relay in the specified time period.All the way relay output, it will be closed when the number with authority calls in, and it will be disconnected automatically after reaching the set time.Action SMS can be sent to the user after the authority phone controls the relay. Between 0 and 999 seconds, the relay closing time can be controlled arbitrarily, in which 0 means: the relay is closed for 0.5 seconds and then disconnected, and 999 means: the relay is closed until the privilege number is called in and then disconnected.Can query the current status of the device (relay status and GSM, 3G signal value) by SMS commandCan upload the current status of the device to the first user regularly by SMS.Use the clock on the module to send an SMS to yourself for timing after each power on; Using metal shell, protection level IP30. metal shell and system safety isolation, especially suitable for industrial control site applications; Small size, L130*W74*H27mm, support wall mounting. Technical parameters:Item parameter rangeWorking voltage DC 12V/1.5A, range 9-24VDC;Working power consumption standby: 12V/16mA; working maximum: 12V/150mA;GSM/3G China Mobile, China Unicom, China Unicom 3G networkSIM card interface support 3V SIM card, does not support China Telecom 2G card;External antenna SMA antenna interface, 50 ohm;Relay output 1 relay output, rated output 3A/220VAC,7A/125V AC, 20A/14V DC;Operating temperature range -10~+60 COperating humidity range 95% relative humidity (non-condensing)Device size L137*W74*H27mm, wall mounting. Standard package:Host controller x1;GSM/4G antenna x1;A number of wiring terminals;Instruction manual x1 (random).