Product DescriptionSpecifications:Detectable Gases:R22, R32, R134a. Measurement Range:0~1000PPM, ideal for diverse leak detection scenarios. Resolution:Precise detection with 1PPM increments. Maximum Sensitivity:Capable of detecting R22 leaks as small as 0.5 ounces/year. Warm-up Time (T90):Quick 30 seconds for general use, 3 minutes recommended after long idle periods. Response Time (T90):Less than 10 seconds for rapid detection. Sampling Method:Uses diffusion type for effective gas sampling. Operating Voltage:DC 4.5V powered by 3 AAA alkaline batteries. Operating Time:More than 6 hours of continuous operation. Display:LCD liquid crystal display with automatic backlight for clarity. Direct Readings:Provides real-time sensor data including gas concentration, battery level, and temperature. Alarm Settings:Adjustable Low Alarm Limit (LAL) and High Alarm Limit (HAL). Alarms:Features audible sound, LED indicators, and vibration for comprehensive alerting. Audio Prompt:Higher beep frequency for higher gas concentrations. Explosion-proof Marking:Certified with Ex ib llB T3 Gb for safety in hazardous environments. Operating Temperature Range:Effective from -10°C to 50°C. Operating Humidity Range:Operates efficiently in