Meriam Model # DDN0400 ±0.025% FS with full temperature compensation 2X range when pressureized on high side only, 150 PSI when applied simultaneously to high and low sides/dry gases Modules are 2.3 L x 1.3 W x 2.6 D positive lock with spring steel latch Depress latch to release Electrical connections are PC board contacts to spring loaded receivers on base unit Sensor bay protection modules fill empty bays > Each Unit Includes Pressure Module Only MFT4000 NOT INCLUDED NIST Traceable Certificate Instruction Manual