Feature: 1. Halogen Detector: The intelligent digital measuring instrument is specially designed for various smoke analysis. It\u0027s shell is ergonomically designed. The series of products are practical, comfortable to use, technologicatty advanced and powerful. 2. 250mm Split Universal Flexible Probe: The probe can be bent and flexibly adjusted to facilitate measurement in different environments. 3. Sound and Light Vibration-Triple alarm: When it is lower than the low limit alarm value, there is no alarm action; when it is higher than the low limit alarm value, but less than the high limit alarm value, intermittent vibration+slow buzzer sound alarm; when it is higher than the high limit alarm value, red font + continuous vibration +The buzzer sounds rapidly to alarm; the maximum displayed value is 999. Specification: Features: Halogen Detector: The intelligent digital measuring instrument is specially designed for various smoke analysis. It's shell is ergonomically designed. The series of products are practical, comfortable to use, technologicatty advanced and powerful. 250mm Split Universal Flexible Probe: The probe can be bent and flexibly adjusted to facilitate measurement in different environments. Sound and Light Vibration-Triple alarm: When it is lower than the low limit alarm value, there is no alarm action; when it is higher than the low limit alarm value, but less than the high limit alarm value, intermittent vibration+slow buzzer sound alarm; when it is higher than the high limit alarm value, red font + continuous vibration +The buzzer sounds rapidly to alarm; the maximum displayed value is 999. Anti Slip Design: Provides a comfortable feel and prevents hands from slipping and falling off. Auto-Off: Enter the settings interface, select auto-off, and press the OK button to set the auto-off time for 15 minutes, 30 minutes, 60 minutes, and never. In addition, when the battery voltage is lower than about 3.5V, the product will auto-off due to the low voltage. Specifications: Model: NF-604 Material: ABS Detection Gas: Halogen Measuring Range: 0-1000PPM Resolution: 1PPM Preheating Time: 30S Measurement Error: Gas detection: ±5%FS Temperature detection: ±1℃/2℉ Warm-up Time (T90): 30 seconds Response Time (T90): <30 seconds Sampling Method: Semiconductor sensor sampling Display: Color screen Direct Reading: Real-time concentration reading of the sensor, battery level, concentration unit, temperature Alarm Settings: Low alarm function, high alarm function settings Alarm: Sound, display font color change, vibration indication alarm, working voltage undervoltage indication Audio Prompt: When the concentration is between the low limit and the high limit, the buzzer will sound the alarm slowly, and when the concentration is greater than the high limit, the buzzer will sound the alarm rapidly. Auto Power Off: 15min, 30min, 60min, never Working Hours: ＞6h Low Battery Alert: 4.35±0.1V Low Battery Power-Off: 3.5±0.2V Applicable Temperature Range: -10℃~50℃ / 14℉~122℉ Applicable Humidity Range: 10%-99%RH (non-condensing) Power Supply: 4 * 1.5V AAA alkaline dry batteries (Not included) Item Size: 173 * 63 * 31mm / 6.81 * 2.48 * 1.22in Package Weight: 350g / 12.34oz Package Size: 26 * 11 * 6cm / 10.23 * 4.33 * 2.36in Package List: 1 * Halogen Gas Detector 1 * Tool Kit 1 * User Manual (English) Package List: 1 * Halogen Gas Detector 1 * Tool Kit 1 * User Manual (English)