- Designed to raise or lower temperature of supply water or air based on proportionate rise or drop in temperature at the master sensor
- Use as a stand alone device or with plug-in accessory modules
- A99BC-25C Master and A99BB-300C Supply sensors included
- Adjustable master reset set-point (40°F to 70°F), minimum relay on-time selection (jumper selectable: OFF, 1, 2 or 3 minute), adjustable minimum (50°F to 160°F) and maximum (160°F to 220°F) supply temperature and selectable warm weather shutdown temperature (jumper selectable: OFF, 60, 64, 68 or 72°F)
- Switch action: SPST, N.O.