Johnson Controls T‑4002‑203 Pneumatic Thermostat – Single Temp, High Volume Output

Genuine Johnson Controls T‑4002‑203 pneumatic room thermostat.
This is the high‑volume output model from the T‑4000 series, designed for commercial HVAC pneumatic systems including VAV boxes, reheat coils, and zone control applications.

✔️ Features

• Model: T‑4002‑203
• Type: Single‑Temperature Pneumatic Thermostat
• Output: High‑Volume (High Capacity)
• Setpoint Range: 55–85°F (typical)
• Air Supply: 20–25 psi
• Internal restrictor — no external restrictor required
• Ideal for commercial buildings with pneumatic control systems