â·ÃÊͺ¶ÒÁÃÒ¤Ò Pocket type CO detector 7701. Low cost digit pocket type detector checking CO Concentration. Dual LCD display with carbon monoxide and maximum readings. à¤Ã×èͧÇÑ´ CO ÃØè¹ 7701 Pocket type CO detector 7701 Description: Low cost digit pocket type detector checking CO Concentration. Dual LCD display with carbon monoxide and maximum readings. Long life and reliavle electrochemical carbon monoxide sensor. Warning carbon monoxide audible alert. Alarm adjustable, Preset at 25ppm. Housing top designed surrounds with rails to help air ventilation for quick and accurate response. Easy to manually calibrate at 0 or 500ppm carbon monoxide standard gas. Backlight function works for dark area. Low battery indicator. Power by 3 pcs AAA Batteries. Specifications: 7701 CO range 0~999ppm Resolution 1ppm Accuracy (at 20±5°C, 50±20%RH) ±20% at 0~100ppm: ±15% at 100~500ppm Others range are not specified Response time within 60 seconds LCD size (mm, H×W) 11×26 Operating condition 0~50°C, 5~95%RH (avoid condensation) Storage condition -20~50°C, 0~95%RH (avoid condensation) Power supply 3 pcs AAA batteries Meter size (L×W×H, mm) 175×47×28 Weight 120g Standard package Meter, manual, AAA alkaline batteries, plain box, wrist strap, soft carry pouch 7701 AZ Instrument CO detector CO Meter Gas Detector à¤Ã×èͧÇÑ´ CO à¤Ã×èͧÇÑ´¡êÒ«¤ÒÃìºÍ¹Á͹͡䫴ì