HRSM-HE™ is a "near" explosion-proof compliant unit that comes standard equipped with a humidistat control package attached directly to the back of the unit. HRSM-HE incorporates an explosion-proof motor and components to get as close to explosion-proof compliant as possible. However, the Nema 4X junction box, spark-less mercury contactor, harsh environment toggle switch and epoxy encapsulated humidistat switch, are rated NEMA 4X, (harsh environment). Developed for indoor humidification applications where mobility and automatic humidity control is necessary. The HRSM-HE has many of the same features of the HRSM. A pivoting head directs the fogging output upward at different angles, with adjustable outputs up to 32 gallons per hour. HRSM-HE unit propels a powerful jet stream of misty-fog mixed with air-flow. Two internal float valve assemblies with garden hose connection allows for continuous duty operation.