Material: Plastic+Metal OOTDTY Color: Black Air stress (differential pressure parameters Temperature Use of humidity load: zero / 125V (48VDC) Work stress value: 100MΩ DC500V (between the and the metal for shell) Pressure: 2000V 50Hz leakage current <0 (between the terminals and the steel for shell) Size: 7*8cm/2" Package Contents: 1x Air Pressure