B2 model 
Protect your home, business, restaurant, hotel or industry! 
The Bitwo Gas Detector will immediately indicate the presence of high levels of combustible gases (LPG, natural, ethanol and hydrogen) that are leaking from any installation or tank. As well as toxic gases from burning fuels (smoke and carbon monoxide). 
 
Relay (automatic switch) and its terminals (NO, COM and NC) to make wired connections and control different peripherals (sirens or solenoid valves) or direct to an alarm control panel.
Another fault relay to alert the alarm panel when there is a fault in the detector.
Ideal to control the BOT. A robot that will automatically shut off your gas stopcock when it detects a leak. Find it also in the BITWO STORE!
Let no one disconnect it! Fixed installation in a 2 x 4 inch electrical box.
Touch button for "TEST", "RESET".
Automatic "Night Mode", dims the intensity of the LED by 80% when it detects low light in the environment to avoid discomfort when sleeping.
Dual powered, can be powered with either 120V AC or 12V DC.
Automatic calibration and no maintenance required.
Internal 90 dB alarm.

The only one with the Mexican NOM-NYCE certification. Don't take risks with generics! 
 
 Important: 
It is recommended to install a detector for each space of up to 4x4m.
Install at least 1m of stoves or appliances that emit steam.
Do not install in rooms where there may be steam such as bathrooms with showers.
Do not spray deodorant, perfume, or spray near the detector.
The detector can be activated by toxic vapors from cleaning chemicals.
Read instructions to know the ideal installation height depending on the gas to be detected.

Designed and manufactured in Mexico.