Brief Introduction 
The DN-B3000 Combustible and Toxic Gas Detector is an instrument capable of continuously detecting the concentration of natural gas in the working environment. The detector uses natural diffusion to detect gas concentration and employs imported sensors, offering excellent sensitivity and outstanding repeatability. The instrument adopts embedded micro-control technology, featuring simple menu operation, comprehensive functions, and high reliability.
Detailed Introduction
Main Features
◎ Low power consumption, long standby time
◎ Built-in vibrator, suitable for use in extremely noisy environments when alarming 
◎ 6 ultra-bright LED light tubes rotate and light up, simultaneously driving the buzzer to emit intermittent "beep--beep--" sounds 
◎ Adopts LCD display with full Chinese menu operation
◎ High and low limit concentration alarms, alarm set points are adjustable across the full range
◎ Compact size, dimensions are:
110mm×55mm×25mm
◎ Special housing material provides good anti-slip effect
Technical Parameters
◎ Operating Voltage: DC3.6V (rechargeable battery)
◎ Detection Method: Free diffusion type
◎ Detection Principle: Electrochemical