Arduino Smart Fire & Gas Safety System Call & SMS

Arduino GSM Based Fire and Gas Leakage Alarm System with RFID Door Lock Arduino Smart Fire & Gas Safety System is a multi-sensor home protection project designed to detect fire flames and LPG/smoke leakage automatically. When danger is detected, the system activates a buzzer alarm, starts a water pump for fire suppression, cuts main power using relay, and sends alert via mobile call and SMS through SIM800L GSM module. It also includes an RFID based smart door lock and automatic ventilation fan for improved household safety. Specifications Controller: Arduino compatible board Flame Sensor Module: NHR0057 4-Pin Gas Sensor: MQ-2 Smoke & Gas Leakage Sensor GSM Module: SIM800L (Call & SMS alert) Door Security: RC522 RFID module with SG90 servo lock Alarm: 5V Active Buzzer Fire Suppression: Mini Submersible Water Pump Power Cutoff: 5V Single Channel Relay Module Motor Driver: D882 NPN Transistor with base resistor Voltage Regulation: LM2596 Buck Converter (5V output) Power Source: 2× 18650 Li-Ion rechargeable batteries Additional Safety: Exhaust cooling fan activation during gas leakage Body Material: 5mm PVC board enclosure