The Calex 20W HP DC/DC Triple converter is housed in a metal case. The HP series has an input range of 2:1 for input voltages of 12, 24, and 48VDC.
The Calex 5W HW DC/DC converter is housed in a plastic DIP case. The HW series has an input range of 2:1 for input voltages of 12, 24, and 48VDC.
The Calex 3W LCS DC/DC converter is housed in a plastic DIP case. The LCS series has an input range of 2:1 for input voltages of 12, 24, and 48VDC.