CO2yield: 3~13 cubic feet per hour, it is suitable for uses under the 3200 cube feet spaces. (Approximate) 

Ignition mode is automatic. And it will ignite automatically in sudden flameout situation. When ignite unsuccessfully, the solenoid valve can automatically prevent the gas from leaking out in the event.

Use 12VDC low watt, use safely reliable.

Specifications:

• Model No.	8 burners
  Type	Natural gas
  Reductor input pressure	114mmH2O ( 4.5″W.C.)
  Reductor output pressure	40000BTU/hr
  Redutor flux	0.6M3/hr
  Exhaust way	Force exhaust
  Ignition way	High-pressured pulse spark
  Safety Setting	Flameout protection, cut protection
  Area of greenhouse(cubic feet)	≤3200
  Wastage of fuel( each burner )(kg/hr)	0.225
  Yield( each burner )(cubic feet/hr)	3.47
  Rated power supply	Input : 100~240VAC
  	Output: 12VDC 1.5-2.0A
  BUT(each burner)	Natural gas: 3135
  Packing size (mm)	56*49*58cm
  Weight (kg)	7.7