The utility model discloses a long -range security protection system based on arduino range finding, it relates to long -range security protection field. It includes a host node and a plurality of child node, and host node and child node are settled indoor on door or window have the wall ...
Long Range Transceiver ModuleTFT Display 1.28 Inch TFT LCD Display Module Round RGB 240*240 GC9A01 Driver 4 Wire SPI Interface 240x240 PCB For ArduinoTZT 95DB Alarm High-decibel DC 3-24V 12V Electronic Buzzer Beep Alarm Intermittent Continuous Beep for Arduino Car Van SFM-27TZT Dupont Line ...