basic multigas + pump analyzer, detector, meter by forensics | 4 gas monitor | usb recharge | sound, light & vibration alarms | usa nist calibration | forensics detectors fd a basic multigas detector + pump setup for easy use industrial applications by forensics. the pump allows for point probe sampling or continuous sampling if one does not wish to enter the toxic environment or requires continuous controlled sampling. simple lcd, large and with backlight. product comes with the multi-gas detector, english manual, computer usb recharge cable, charger, calibration cover, metal belt clip and nut to secure cap. 100% customer satisfaction. comes factory calibrated. open the box, turn on and go. combustible gas (lel) 0-100% with 1% resolution. oxygen (o2) 0-30% with 0.1% resolution. carbon monoxide (co) 0-999 with 1ppm resolution. hydrogen sulfide (h2s) 0-100ppm with 1ppm resolution. accuracy: ≤±5% f.s. response time: ≤30s. working environment: -20°c~50°c, <95%rh (no dew). power source: dc3.7v li-on battery, 2000mah. gas sensor life: 2-3 years. explosion-proof grade: ex ia iic t4. protection grade: ip65. weight: 230g (with battery). dimensions: 130mm×67mm×30mm (l × w × h). gas output is a male 3.2mm tube connector which connects to standard aquarium clear tubing with diameter 3/16". pump has a rechargeable dc3.0v li battery 1800mah charged via usb connector. pump lcd shows temperature detection, time, date and backlight high resolution lcd are included. power load indicator of pump resistance is also clearly shown so user has insight into the pump load. ideal for point sampling of toxic gas or remote sampling (can operate up to 50 feet). pump specs: temperature: -10°c~60°c. humidity: <95%rh non-condensing. voltage: dc3.0v li battery 1800mah. flow rate: 0.5 lpm. noise: <60db. weight: 140g (with battery). dimensions: 65x30x225 mm. 100% customer satisfaction. 100% qa by real sensor and gas detector engineers. 100% product test and verification in california, usa. 100% quality guaranteed. arrives with calibration and qa certificate. usa nist calibration.