MAIN CHARACTERISTICS range of product HARMONY XB4 product or component type HD F DOUBLE-HEADED PUSHBUTTON device short name ZB4 bezel material BLACK METAL mounting diameter 22 MM sale per indivisible quantity 1 shape of signaling unit head RECTANGULAR type of operator SPRING RETURN operator profile 2 FLUSH PUSHBUTTONS operators description WHITE I - BLACK O COMPLEMETARY CHARACTERISTICS product weight 0.056 KG resistance to high pressure washer 7000000 PA AT 55 CDISTANCE 0.1 M colour of marking BLACK MARKING WHEN WHITE CAPS operator profile BLACK FLUSH WHITE O mechanical durability 1000000 CYCLES electrical composition code C3 FOR