KONLEN Smart 4G Controller with 4 relays:   Model: KLN-SM4-WLTE (New Arrival)   All the kits include DC12V power adapter and external antenna.        Mainly Features:   1.  Remote Control, no distance limitation   2.  4G Data network Remote Control Via App   3.  Dial Control first relay, SMS control 4 relays   All the people who know SMS command and password can send SMS text to control the 4 relays output.   For the call control, it supports 99 authorized call numbers Max.   Note: When the device detects the ring call, the relay 1 will change status, so call control is free of charge. But the call can only control first relay ouput, invalid for other 3 relay output.   4.  With 4 relay output (10A/30VDC, 10A/250VAC)   5.  Support Temperature/Humidity Control   6.  Scheduled/Timing Control   7.  Industrial class design, Aluminum alloy material   It can be controlled by two modes, SMS mode or 4G Data Network Mode. The default is SMS mode. If want 4G data network App control mode, please set APN first before use.   Application:4 Channels support to control more devices, you can control all channels at the same time and you can also control each relay separately . It was widely used in farm, hennery, machine room, electric garage door etc.,   Control Electric Garage Doors at same time   Please note :   There are two sensors interface:   Sensor 1 port: for connecting temperature sensor   Sensor 2 port: for connecting temeprature and humidity sensor. (Plastic or Metal probe for option)   Temperature & Humidity Control functionIf the temperaturehumidity is less than more than the tempeareture (humidity ) you set , the device will switch on/off automatically as you required .   For example : If you need the device to work automatically when the device less than ( more than ) a certain temperature /humidity , you can use this function.    Support up to 12 groups of temperature setting and 4 groups of humidity setting.   Scheduled/Timing Control   Support up to 24 groups of timing task setting   More information about APP   Wring connection   Note:If you need connect high power equipment to the controller, you should add AC contactor by yourself.   Specification   DC power supply: standard adapter DC12V/500mA or 1A, Range 9 to 12V.   Power consumption: standby 12V/500mA, working Max: 12V/200mA   TDD-LTE: B34/B38/B39/B40/B41   FDD-LTE: B1/B3/B5/B8   GSM/GPRS/EDGE: 900/1800mhz   SIM Interface: Support 3V micro SIM Card   External Antenna: SMA Antenna interface, 50 ohm, Ga in 6DB   Two sensor interfaces.   Sensor  1 interface:  for connecting temperature sensor   Sensor  2 Interface:  for connecting temeprature and humidity sensor   Sensor cable length: 1 meter   Humidity Detection range: 0 to 100%   Temperature detection:  range: -40 to +110 centigrade   Relay Outputs: 4 Channels, 10A/30VDC, 10A/250VAC   Output logic: normal open and normal close.