Explosion proof head 1/2" x 3/4" NPT
Explosion proof head 1/2" x 3/4" NPT, 2,3,4 6 terminal block sold separately 
TIPTEMP Thermocouple heads meet NEMA 4 rating for indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects [windblown dust]: to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water [rain, sleet, snow, splashing water, and hose directed water]
For hazardous locations. Underwriter's Laboratories Listed Class 1, Groups C, D; Class 2, Groups E, F, G; Class 3, all Groups.
For hazardous locations. Underwriter's Laboratories Listed Class 1, Groups C, D; Class 2, Groups E, F, G; Class 3, all Groups.