Home Electronics & Navigation Instruments Controls SDB500EX Direct Mount Temperature Swichgage® – 3/4” NPT Thermowell (100-500° F) Murphy SDB500EX Direct Mount Temperature Swichgage® – 3/4” NPT Thermowell (100-500° F) $1,416.09 SDB500EX Direct Mount Temperature Swichgage® – 3/4” NPT Thermowell (100-500° F) quantity Add to cart