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10pcs/set PN602 Wireless GSM Burglar Intruder Sensor Security Fire Alarm System

11pcs/set LCD Wireless GSM SMS RFID Home Fire Alarm System Accessories Detector

Development Board SX1278 ESP32 Chip OLED WIFI LoRa Node 433-470MHz Upgrade Version Heltec for Arduino - products that work with official Arduino boards

3pcs FRM01 12V 1 Channel Multifunction Relay Module Loop Delay Timer Switch Self-Locking PLC Cycle Timer Module Delay Time Switch

5pcs 5A 5V ACS712 Hall Current Sensor Module Geekcreit for Arduino - products that work with official Arduino boards