Johnson Controls T-4002-301

Johnson Controls T-4002-301 is a white DA pneumatic thermostat designed for 2-pipe systems, delivering reliable temperature control with a clean white cover.

Specifically built for the demands of commercial and light industrial spaces, this pneumatic thermostat provides accurate, responsive control over heating and cooling cycles, helping stabilize room temperatures and save energy in 2-pipe systems. Compatible with standard control networks and retrofit-friendly, it minimizes downtime during upgrades and service. Ideal for offices, schools, and light-commercial settings.

• White cover and rugged housing for durable, discreet installation.
• Designed for 2-pipe hydronic systems with standard pneumatic signals.
• Accurate pneumatic temperature control for stable comfort.
• Low-maintenance internals with reliable performance in commercial spaces.
• Easy installation and service with common components and connections.