The DRS-50 Reed Switch is a miniature, normally open switch with a 50.80mm long x 5.25mm diameter (2.000” x 0.207”) glass envelope, capable of high voltage and power switching up to 400Vdc at 2mA. Will carry 6A and switch up to 100W/VA. It has an insulation resistance of 10^10 ohms minimum and contact resistance less than 100 milli-ohms.