No C Wire Options
Compare no-C-wire smart thermostats by power method: included adapters and extenders, battery power, and the line-voltage systems to rule out.
Emerson ST55U Smart Wi-Fi Thermostat
Product details
General specs
- Brand: Emerson
- Model: ST55U
Starting from €82.99
Last price update: 10/3/26
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| Brand | Emerson | Honeywell | Aurora air-condition | Honeywell | Braeburn | |
| Model | ST55U | Th6220wf2006 | RTH9580WF | 7205 | ||
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| Price | €82.99 | €61.68 | €138.29 | €71.39 | €133.04 | €59.79 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jun 24, 2026 | May 29, 2026 | Jun 19, 2026 | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 |
| Compatibility | Smart Home Systems | Furnace, Boiler, Heat pump, Residential HVAC systems | Apple iOS, Android | |||
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