[Features] · A To-Package type LD holder with a built-in Peltier element. · Features a built-in Peltier element, and a calibrated 10kΩ thermistor sensor. · Supports LD sizes of ø5.6 (Pin PCD, 2.0) and ø9.0 (Pin PCD, 2.54) for three-pins and for four-pins respectively. · For common anodes and common cathodes, etc., configure by replacing the jumper pins. · For connectors, a D-sub9 pin female is used for driving the LD, and a D-sub9 pin male is used for the temperature controller. · The F129-1 water cooling adapter is also available. · Use a low temperature circulating water tank or similar to enable greater stabilization and for even lower temperatures.