Features: Male and Female RS232 DB37 connectors, Screw terminal block. This allowed customer to build an adapter to allow switching between devices without changing the field wiring cable. FR-4 fiber glass PCB, dual copper layers. PCB dimensions: 72 x 116mm(W x L). Din rail mountable - for DIN C45 width 35 / 32 / 15mm rails, Din mount case can be taken apart for panel mount use. Terminal block: Pitch 5.08mm/0.2" miniaturization screw terminal block. Wire range: 28-12AWG. External dimensions: 85 x 120mm(W x L ). Terminal Block Specifications: Pitch: 5.08mm Supply Voltage: 60V Rated current : 1A Wire range: 28-12AWG Screws: M2,steel,Cr3+ Zn plated Torque : 0.2Nm (1.7Lb-In.) Pin header and Cage: Brass 5.08mm Screw Terminal Block Terminal block: Pitch 5.08mm; Wire range - 28-12AWG Clear Labeled Signal line all the leads, number clearly marked DIN Rail Mount DB37 Interface Module Male and Female RS232 DB37 connectors, Screw terminal block