Backlit LCDLarge backlit LCD screen to display gas pressure value clearly even in low-light conditions. Automatic power-off after 25 mins no-operation to save battery life. Protective cap and 134g handheld design makes this dual port manometer gauge more practical in testing air pressure for water column, gas valve and furnace etc.
Accessories & Warranty manometro air pressure differential meter 189A comes with 4pcs flexible tube, 1pcs 1/8 thread adapter, portable case and 180 days quality warranty.