Supply Of Low Combusion Air Pressure Switchlow Combusion Air Pressure Switch,Low Combusion Air Pressure Switch. Adjusting Range: 100-1000Mm Wg, Set Pressure:600Mm Wg, End Connection: 1/2 Bsp(F), Switch Contact: Spdt, 5A, Model: Gm-021-00-D8d-2-Z, Make-Wika, Switzer Or Similar [ Warranty Period: 30 Months After The Date Of Delivery ]