Portable Gas Detectors can detect VOC, Toxic, Combustible & Oxygen types of gases which are used for personal safety. Portable Gas Detection System will detect the concentration of gases in confined spaces, sewer manholes, wastewater treatment plants, pharmaceutical industries, fertilizer industry, and many other applications with the display of gas concentration on the LCD. Portable Gas Monitors are a must for people entering hazardous areas. These detectors have the feature of secure handling and programming with three keys and power supply with rechargeable batteries. They have a password-protected function menu, plug-in sensor, and built-in audio buzzer. These Portable Gas Detectors also have optional data logging facilities with 50000 records, which are visible in ASCII format while downloading to PC via USB interface.