TRACOPOWER TEQ 20WIR 20W DC-DC Converter Chassis Mount, Voltage in 9 → 36 V dc, Voltage out ±15V dc Railway, Input Voltage Nominal: 24 V dc, Isolation Voltage: 2.25kV dc, Output Current: 667mA, Efficiency: 88%, Railway Approved: Yes, Load Regulation: 1%, Minimum Temperature: -40°C, Maximum Temperature: +83 °C, +93 °C, Depth: 26.1mm, Length: 103mm, MPN: TEQ 20-2423WIR