Smoke Sensor Module, Smoke Detector Alarm MQ 2 with Relay Switch and Multiple Alert Buzzer, for Warehouse Storage Public Transport -

ACCURATE DETECTION: This module is capable of detecting smoke density and allows users to set a smoke detection threshold. When the smoke concentration exceeds the preset value, the relay closes, the alarm indicator lights up, and the buzzer sounds an alert; when the smoke concentration falls below the threshold, the relay disconnects, the alarm indicator turns off, and the buzzer stops the alert. PROTECTION: The sensor module has reverse connection protection capabilities to prevent hazards associated with an incorrect power connection. WIDE APPLICATIONS: Our smoke sensor module is ideal for use in public transportation, public spaces, warehouses, and kitchens, providing safety and reassurance in fire-prone areas. ALARM FUNCTION: The sensor module triggers an alarm, relays, and indicator lights when the detected smoke concentration exceeds the set threshold. Conversely, the alarm, relay, and indicator lights turn off when the smoke level falls below the threshold. PRACTICAL FEATURES: The sensor module features a multi-alert buzzer and offers a relay switch output for enhanced alert notifications and response. Specification: Item Type: Smoke Sensor Module Switch Mode: MQ 2 Material: PVC Operating Voltage: DC5-30V Output Capacity: AC 220V 10A or DC 30V (less than equipment required) Static Current: 20mA Dynamic Current: 50mA With reverse connection protection, the power supply will not damage the board. Lifespan over 100,000 uses, temperature -40 to 85°C. Hole spacing is approximately 44 mm/1.73 inches long and approximately 40 mm/1.57 inches wide; outer frame opening distance is approximately 2.5 mm/0.1 inches; opening diameter is approximately 0.12 inches. Package includes: 1 x smoker