• The NT-PROBE-SS8 temperature sensor is designed to work in conjunction with the Net/X™ X7, X5 and UP32 thermostat families. The NT-PROBE-SS8 is an 8" stainless steel temperature probe with a mounting flange. The NT-PROBE-SS8 can be used as a duct probe or space probe (such as a walk-in freezer or refrigerator) where the electronics needs to be housed outside the temperature measurement area. The NT-PROBE-SS8 is to be connected to the NT-URS sensor electronics. The NT-URS is required (sold separately).