SMS GSM Modul Remote Control Switch sim800c STM32F103C8T6 2 Channel

Voltage: 9V-36V, when using 9V Power supply, the current need above 1A Relay interface: Using 250V 10A relay, you can directly operate most of the electrical appliances on the market. SIM Card Socket: Insert SIM card when system powered off. (In China, please use mobile or Unicom card). LED interface: There are three LED lights named D3 D6 D7 (D7 is close to the positioning hole, D6 is close to the antenna interface). LED indicator state corresponds to the equipment working conditions are as follows, each column is one state Sys state Sys power on Sys failure Sys configuration Sys Ready Sys receive message D6 Always on Always on Always on 1000ms On / 1000ms / Off Alternate flicker of D6 D7 D7 Always on On for a moment off Always on Alternate flicker of D6 D7 D3 off Flashes every other time 1000ms On / 1000ms / Off 64ms On / 3000ms / Off 64ms On / 3000ms / Off Before using this device, please send a text message for authorization first. Then you can send a message command to control relay. Authorized number configuration: This system supports up to 3 authorization numbers. Format: * code * # NAuthorized number #, after setup successfully, the device will reply, SMS Content is: User (N) Number: number is set ok. For example, if system code is 123456, and you want to set the first authorized number is 18846919911, you can send the SMS: * 123456 * # 118846919911 # .the device will reply, content is: User1 Number: 18846919911 is set ok! The new authorization number is saved in the device; and you want to set the second authorized number is 18846919900, you can send the SMS: * 123456 * # 218846919900 # .the device will reply, content is: User2 Number: 18846919900 is set ok !. The new authorization number is saved in the device. Application Farmland irrigation Greenhouse Server room Pet feeding Oxygen pump Roller shutter Package Includes: 1 X 2 Channel Relay Module with GSM Antenna