24V Non-Programmable Digital Heating Heat Pump Thermostat STN721W Air Conditioner WiFi Thermostat ac with Alexa
STN721W is a WiFi heat pump thermostat with voice control through Alexa, supplied deliberately without a schedule. It handles heat pump staging and up to 2 heat and 1 cool on conventional equipment, keeps separate B and O terminals, and enforces heating and cooling setpoint limits so remote users cannot drive the plant outside its design range. Sensing runs 32 F to 99 F with a setpoint range of 44 F to 90 F.
Key Benefits
- Voice control through Alexa without adding a schedule to maintain
- Setpoint limits cap what any user, local or remote, can select
- Separate B and O terminals suit both reversing valve conventions
- Universal sub-base mounts on a wall or a junction box
- FCC documentation for the radio, on a 24VAC hardwired supply
Problems It Solves
- Remote users setting temperatures outside the plant's design range
- Schedules that nobody maintains in managed buildings
- Reversing valve wiring restricted to one convention
- Voice control products without the radio paperwork for export
Who It Is For
- Smart home integrators working with Alexa
- Facility managers wanting remote control with hard limits
- Heat pump installers on connected projects
- OEM buyers needing an FCC documented WiFi model
Technical Features
- Universal WiFi control that works with Alexa
- Non-programmable, heat pump plus up to 2 heat and 1 cool conventional
- Temperature range 32 F to 99 F (1 C to 40 C), setpoint range 44 F to 90 F (7 C to 32 C)
- Display accuracy +/-1 C at 20 C
- Heating and cooling setpoint limits
- Separate heating and cooling swing (cycle rate) adjustments and 5 minute compressor delay protection
- Power supply 24 VAC (18 to 30 VAC), 50/60 Hz hardwired with common wire
- Universal sub-base, mounts on wall or junction box, 120 x 98 x 28 mm, ABS and PC, FCC
Specifications
| Model | STN721W |
| Programmability | Non-programmable |
| Power Supply | 24 VAC |
| Switchable Voltage | 24VAC (18~30VAC), 50/60 Hz for hardwire (common wire) |
| Temperature Range | 32°F-99°F (1°C-40°C) |
| Setpoint Range | 44°F-90°F (7°C-32°C) |
| Display accuracy | ±1°C (at 20°C) |
| Screen | LCD |
| Material | ABS+PC |
| Dimension | 120 x98 x28 mm |
| Application | Villa, Hotel, Apartment, Office Building, Hospital, School, Mall, Sports Venues, Leisure Facilities, Supermarket |
| Type | Air Conditioning/Heating/HVAC Systems/Heat Pump |
| Feature | Save Energy |
| Certification | FCC |
| Warranty | 1 Year |
| After-sale Service | Online technical support, Return and Replacement |
Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.
Application Scenarios
- Villas and apartments with voice assistants already installed
- Hotels and office buildings on heat pump plant
- Hospitals and schools where setpoint limits are policy
- Malls and sports venues needing remote adjustment without scheduling
Quality Control
- WiFi association and voice service link verified on every unit
- Setpoint limit enforcement checked during the functional test
- Radio performance records kept against the FCC file
Customisation Options
- Setpoint limits preset to the operator's policy
- App and voice skill branding on ODM projects
- Housing marking, manual and carton
- Staging defaults set for the buyer's equipment
How It Compares
Installing And Commissioning
Step 1
Confirm a common wire is available, since this model is 24 VAC hardwired
Step 2
Fit the universal sub-base to the wall or junction box
Step 3
Land the conductors, using B or O as the reversing valve requires
Step 4
Set heating and cooling setpoint limits before releasing remote access
Step 5
Join the thermostat to WiFi and link it to the Alexa account
24V Non-Programmable Digital Heating Heat Pump Thermostat STN721W Air Conditioner WiFi Thermostat ac with Alexa: Buyer Questions
Does the STN721W work with Alexa?
Yes. It is listed as working with Alexa for voice control alongside the app.
Is there a schedule?
No. It is non-programmable, which suits managed buildings where the operator sets limits rather than timings.
Can we stop users setting extreme temperatures?
Yes. Heating and cooling setpoint limits are enforced in the installer menu.
Does it need a common wire?
Yes. It runs on 24 VAC (18 to 30 VAC), 50/60 Hz hardwired.
What are the dimensions?
120 x 98 x 28 mm, mounting on a wall or a junction box.
What radio approval does it carry?
FCC. Tell us your destination market and we will confirm what else is required.
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Quote The 24V Non-Programmable Digital Heating Heat Pump Thermostat STN721W Air Conditioner WiFi Thermostat ac with Alexa
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