SEN1578
SEN1578 Trane – Programmable zone sensor (ASYSTAT777AA) for Precedent and Voyager AC units. Vertical mount, 24V DC, white, CE certified. Requires wall plate PLT04445 for replacement installs.
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SEN1578 Trane – Programmable Zone Sensor (ASYSTAT777AA)
The SEN1578 Trane programmable zone sensor is designed for precise temperature control in commercial HVAC systems, including 3–10 ton Precedent and 12.5–25 ton Voyager air conditioners. This American Standard ASYSTAT777AA model features a vertical mount design and operates on 24V DC power.
With CE certification and a white enclosure, this sensor provides compatibility with a variety of system setups. It supports wiring connections from 14 to 22 AWG and functions reliably across a wide temperature range of 14°F to 158°F.
Note: When replacing an existing sensor, you must order the wall plate PLT04445 separately for proper mounting and fitment.
- Type: Programmable Zone Sensor
- Identical Part#: SEN01578
- Model: ASYSTAT777AA
- Voltage: 24V DC
- Color: White
- Mounting Type: Vertical
- Temperature Rating: 14°F to 158°F
- Connection: 14 to 22 AWG wire
- For Use With: Trane Precedent (3–10 ton) and Voyager (12.5–25 ton) units
- Standards: CE Certified
- Country of Origin: US
Applications:
- Light commercial HVAC zones
- Programmable control of Trane Precedent and Voyager rooftop units
- System upgrades and retrofits
| Name | SEN1578 |
|---|---|
| Documentation | Shipping |
| Manufacturer | Trane |
| UPC: | SEN1578 Trane |


