Smart Data Management:Stores 3000 alarm records and offers a 2.8inch color LCD for real-time data and system status. High Precision Sensors:Features electrochemical and catalytic sensors with ±5% accuracy for reliable environmental safety. 9000a Manual|Multifunctional Gas Detection:Monitors O2, H2S, CO, and EX gases with customizable ranges to meet diverse industrial needs. Real-Time Alert System:Integrates sound, light, and vibration alarms to instantly alert when gas levels exceed set thresholds. Extended Battery Life:2500mAh lithium battery provides over 10 hours of runtime, ensuring on-site reliability. Color: As Shown Material: ABS Package Contents: 1 x Gas detector 1 x Charging cable 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.