Gas detector RBBJ Features: ◆ Small size, light weight, easy to carry, easy to operate. ◆ Measurable: Gas ◆ Built correction coefficient, measurement precision. ◆ Anti-static polycarbonate shell, safe and durable. Use of: ◆ kinds of petroleum, petrochemical, chemical production plant area, municipal, fire, gas, telecommunications, coal, metallurgy, electric power Technical parameters: ◆ Accuracy: ± 5% fs ◆ Alarm: Digital display ◆ Alarm volume: ≥ Db ◆ Response time: ≤ 30s ◆ Recovery time: ≤ 60s ◆ Resolution: 1% LEL ◆ Security Level: Exd | | Ct3 ◆ Measurement range :0 - 100% LEL ◆ Working Environment: Temperature: -20 ℃ ~ 60 ℃ Humidity: ≤ 90% RH non-condensing ◆ Working voltage: 3.6V ◆ Charging time: about 150mA12h ◆ Continuous working time: ≥ 8h ◆ Weight: 3.6V lithium battery, weighing about 120g ◆ Dimension: 120mm * 38 * 68mm ◆ Battery: 1800mAh