1、Using the professional combustible gas sensor probe as the detection device, it has wide measurement range and high accuracy. 2、This product has long transmission distance, good linearity, easy to use and easy to install. 3、Adopts high sensitivity gas detection probe, it has stable signal and high precision. 4、Provide data recording, query, export, comparison and other functions of a variety of display. 5、It can be applied to different scenarios such as agricultural monitoring, industrial monitoring, environmental monitoring, hydrological measurement and fire monitoring. 1 x Methane Transmitter Condition: 100% Brand NewItem Type: Methane TransmitterMaterial: ABSSize: Approx. 11.5 x 4cm / 4.5 x 1.6inWeight: Approx. 195g / 6.8oz Specification Technical Index Measuring range 0-100%LEL Measuring Way Catalytic Combustion Type Methane Accuracy 3%F.s Life Span 2 years ( Host ) / 1 years ( probe ) Response Time <15s Baud Rate  2400/4800/9600 Communication Port RS485  Power Supply Bus-powered 12-24V DC Power Consumption ≤ 1.5w Operating Temperature  0-50 ℃ Operating Humidity 15-90%RH