CZH-LABS DIN Rail Mount Common Anode DC Lamp Test Module, 16 Channels.

1N4007 1A 1000V diodes.
FR-4 fiber glass PCB, dual copper layers.
Pitch 5mm/0.197" screw terminal block.  Wire range: 24 ~ 12 AWG. Strip length 7mm/0.28". Screws - M2.5, steel, Cr3+ Zn plated. Pin header and Cage - Brass.
Fireproof nylon material DIN rail mount carrier (not China low quality carrier), can support width 35mm / 32mm / 15mm rail, and the carrier can be taken apart for panel mount use.
Operating Temperature: -20C to 70C.